HVAC Company Serving Maplewood, MO

Maplewood has a lot of older homes packed into a small city, and that can make HVAC work more complicated than it looks from the outside. Victorian homes, brick bungalows, Arts and Crafts houses, and newer townhomes all show up within the same 1.56 square miles. Some have older ductwork, some were updated in stages, and others had heating or cooling added long after the home was built.

Martin-Jetco Heating and Air Conditioning brings decades of hands-on experience with older St. Louis County homes, including systems that have been repaired, replaced, expanded, or reworked over time. That history helps the team look beyond the unit itself and recommend HVAC solutions that fit the home’s layout, age, airflow, and long-term needs.

Call (636) 205-1631 or contact us online to get help from our friendly and experienced HVAC technicians. We accept calls 24/7.

Cooling & Heating Services Martin-Jetco Heating and Air Conditioning Provides in Maplewood

• AC Repair
• AC Installation
• AC Replacement
• Furnace Repair
• Furnace Installation
• Furnace Replacement
• Heat Pump Services
• Ductless Mini-Splits
• Indoor Air Quality
• HVAC Maintenance
• Emergency HVAC Service
• Boilers, geothermal systems, and commercial heating and cooling

Martin-Jetco Heating and Air Conditioning installs and repairs all major brands, including York, Goodman, Daikin, Carrier, and Trane, so we can customize the solution to your space.

What Does It Cost to Replace an HVAC System in Maplewood?

Two categories cover most residential replacements: 

• AC Replacement with evaporator coil: approximately $5,500 to $9,200
• Complete HVAC system (furnace and AC): approximately $8,450 to $22,990 or more

What affects where a Maplewood project lands:

• Square footage and system tonnage required
• Whether existing ductwork is usable or needs sealing, modification, or replacement
• High-efficiency variable-speed equipment versus standard equipment
• Zoning needs for homes where different floors or additions need independent control
• Electrical or code updates before installation can begin
• Indoor air quality components added to the project
• Access in tight construction, finished historic interiors, or constrained outdoor equipment spaces

In Maplewood, ductwork often significantly determines the final cost, because so much of it was added after original construction and has never been fully assessed. An AC replacement with evaporator coil typically runs approximately $5,500 to $9,200, while a complete HVAC replacement ranges from $8,450 to $22,990 or more, but the spread is wider here because of what a technician might find inside the walls. 

An in-home evaluation is the only reliable way to price the actual project. Schedule one online or call (636) 205-1631.

How Much Does It Cost to Fix an AC or Furnace?

When your AC or furnace breaks down, the cost depends on what failed and how much life the system has left. These common repair ranges can help you know what to expect before a technician confirms the issue:

• Capacitor: $150 to $450 
• Thermostat: $100 to $600 
• Ignitor replacement: $180 to $350 
• Flame sensor: $180 to $340 
• Furnace capacitor: $150 to $350 
• Blower motor: $500 to $1,400+ 
• Evaporator coil: $600 to $2,000 
• Control board: $700 to $1,650 
• Heat exchanger: $2,000 to $4,000 
• Compressor-related failures: well over $1,000

After diagnosing the system, our NATE-certified technician gives you a firm cost and explains how it compares to AC Replacement or furnace replacement, so the decision is based on real numbers. Call (636) 205-1631 if you want a straight answer on whether the repair is worth it.

Should I Repair or Replace My HVAC System?

This is the question most Maplewood homeowners are really asking when they call. Here is how our technicians think through it:

• Age. Most furnaces and air conditioners have a realistic service life of 15 to 20 years. A system approaching or past that range on a second repair is worth comparing against replacement costs before committing to the fix.
• Repair cost. When a single repair approaches a meaningful share of what a new system would cost, replacement often makes more financial sense over the next several years.
• Energy bills. A system that is losing efficiency shows up on every utility bill. Repeated high bills with no change in usage often point to equipment that is working harder than it should.
• Refrigerant type. Systems still using R-22 refrigerant are expensive to service because R-22 is no longer produced. A leak on one of these systems often tips the decision toward replacement.
• Ductwork condition. In Maplewood's older homes, the duct system is often the hidden variable. Replacing equipment without addressing ductwork problems frequently means the new system underperforms for the same reasons the old one did.
• Future maintenance. A system that has needed three repairs in two years is telling you something. Our technicians factor in the pattern of repairs, not just the current one.

How Fast Can I Get Emergency HVAC Service in Maplewood?

When your heat stops during freezing weather or your AC quits in extreme heat, waiting days for service is not realistic. Martin-Jetco Heating and Air Conditioning offers emergency HVAC service around the clock, including evenings and weekends.

• If you call in the morning: Same-day service is often available. A licensed, NATE-certified technician is typically dispatched that afternoon, sometimes sooner. 
• If you call in the evening or on a weekend: Calls are answered and a technician is dispatched as quickly as scheduling allows.
• When the technician arrives: They diagnose the problem on site, explain what failed in plain terms, and give you a firm repair cost before any work is authorized. Most repairs are completed during the same visit. Repairs that require additional parts are scheduled within 24 to 48 hours. 

No heat, no AC, or a system that feels unsafe to run? Call (636) 205-1631 now for emergency HVAC service in Maplewood.

Making HVAC Replacement More Affordable

Most homeowners who call about a system replacement ask the same question first: is there a way to pay for this without a large upfront payment? The answer is usually yes, and Martin-Jetco Heating and Air Conditioning reviews every applicable option during your in-home evaluation.

• Financing is available for qualifying projects, converting the full cost into a fixed monthly payment.
• Utility rebates apply to eligible higher-efficiency equipment and are submitted by our team on your behalf at installation. You do not track them separately.
• Federal energy-efficiency tax credits are available on qualifying heat pumps and high-efficiency furnaces. The amount depends on the equipment and the tax year.
• Current seasonal promotions are worth asking about when you call (636) 205-1631, since they vary by time of year.

All of this gets reviewed alongside the equipment cost during your evaluation, so you see the full financial picture before making a decision.

A Family-Owned HVAC Company Serving Maplewood

Martin-Jetco Heating and Air Conditioning has served the St. Louis area since 1964 and remains family-owned today. Every technician carries NATE certification. The company installs and repairs all major HVAC brands, including York, Goodman, Daikin, Carrier, and Trane, so recommendations can be based on the property, the system, and the customer’s needs.

Our record is supported by an A+ rating with the Better Business Bureau, six Angie’s List Super Service Awards, recognition as York Dealer of the Year more than once, and more than 1,000 5-star Google reviews from homeowners across the region.

If you’d like to hear from customers before you schedule, our reviews are a good place to start. They can help you get a feel for the service before you call.

Maintenance That Keeps Older Systems Running

In an older Maplewood Victorian or bungalow, seasonal maintenance can catch problems tied to aging equipment, added ductwork, limited access, or an unclear service history. A pre-season inspection helps find those issues before they turn into an emergency during the first cold week of November or the hottest stretch of July.

The Martin-Jetco Heating and Air Conditioning Home Comfort Agreement puts that inspection on a schedule that runs ahead of both peak seasons:

• Pre-season visits before cooling and heating demand arrive
• Full safety and performance check at each visit
• 20% off parts and labor on repair work between visits
• No extra charge for after-hours or weekend calls
• Priority scheduling when an unplanned issue comes up
• Reduced diagnostic fee on calls during regular business hours
• Service documentation satisfying most manufacturer warranty requirements

Why Maplewood Homes Present Specific HVAC Challenges

Maplewood homes can be harder to diagnose than newer homes because the heating and cooling setup is often layered onto older construction. A licensed, NATE-certified Martin-Jetco Heating and Air Conditioning technician looks at the full property before making a recommendation, including the age of the home, the ductwork, the equipment location, and any renovations that may have changed how the system performs.

These are some of the issues our technicians look for in local homes and buildings:

• Victorian and bungalow homes built before modern cooling existed. A significant share of Maplewood’s residential stock predates central air conditioning, which means the ductwork, if any exists, was added after the fact. Routing through original plaster construction and period woodwork limits the options and affects both the cost and the approach. 
• Ductwork pieced together over multiple renovation cycles. Many homes have had systems updated, expanded, or partially replaced at different points by different contractors. That can leave behind a duct system that works inconsistently.
• Tight urban lots with constrained outdoor equipment placement. Maplewood’s density leaves little room for outdoor condenser units. Units placed too close to structures, fences, or neighboring properties can run hot, cycle inefficiently, and wear components faster than a unit with adequate clearance. 
• Multi-family and mixed-use buildings throughout the commercial corridor. Properties along Manchester Road and the Greenwood Historic District often mix residential and commercial use, each with its own HVAC requirements, access limitations, and sometimes historic preservation considerations that affect where equipment can be placed. 
• Systems due for replacement in recently renovated homes. Maplewood’s real estate market has been active, with many properties renovated and resold over the past decade. A home that looks updated may still be running an older system that was never part of the renovation scope. 

What HVAC Issues Are Common in Older Maplewood Homes?

One of the most common issues we see in Maplewood homes is ductwork that has been modified over several renovations. Before recommending replacement equipment, our technicians measure airflow throughout the house because replacing the furnace or AC alone often will not solve uneven comfort.

Maplewood's Victorian homes, Arts and Crafts bungalows, and historic brick houses were built before modern central air existed. When cooling was added decades later, it was worked into whatever space was available, and that approach left behind duct systems that were never ideal to begin with.

• Victorian and Arts and Crafts homes with plaster walls and original woodwork. Routing new ductwork through these homes means working around original plaster, lath construction, decorative woodwork, and narrow wall cavities. Ductless mini-splits are often the most practical solution, delivering room-by-room cooling without disturbing the original construction.
• Radiator systems in homes without central air. Some of Maplewood's oldest homes still heat with hot-water boilers and cast-iron radiators. These systems require specific expertise to service, and adding cooling to a radiator home is a different project than a standard AC replacement.
• Old electrical panels limiting equipment options. Homes from the early-to-mid 20th century sometimes have electrical panels that need updating before modern high-efficiency equipment can be installed. Our evaluation identifies this before the project is priced.
• Limited chases and tight construction. Original construction in Maplewood's denser neighborhoods leaves little room for new duct runs. Every routing decision involves trade-offs between what is ideal and what the structure actually allows.
• Systems updated in pieces over multiple ownerships. A home that has changed hands several times may have ductwork from three different decades, equipment from two different contractors, and a thermostat that was never calibrated for how the system actually performs. Our technicians trace all of it before making a recommendation.

Why Older Maplewood Ductwork Causes Comfort Problems

Ductwork that was pieced together across multiple renovations is one of the most consistent sources of comfort problems in Maplewood homes. Here is how these issues develop and what we do about them:

• Added ductwork that was never sized correctly. When cooling was retrofitted into an older home, duct runs were often routed wherever they fit rather than wherever they were needed. Runs that are too long, too narrow, or that make unnecessary turns lose pressure before supply air reaches the room.
• Multiple renovations by different contractors. Each renovation may have modified the duct system in ways that made sense at the time but created conflicts with later changes. The result is a duct network that no single contractor ever designed as a whole.
• Undersized return air. Return air sizing is one of the most frequently overlooked aspects of older HVAC installations. An undersized return starves the system of the airflow it needs, forces the blower to work against higher static pressure than it was designed for, and leaves rooms feeling stuffy regardless of how much supply air reaches them.
• Leaking ducts in unconditioned spaces. Ducts running through attics, crawl spaces, or uninsulated wall cavities lose a significant share of conditioned air before it ever reaches living spaces. In Maplewood homes, where duct runs often pass through areas that were not originally designed for them, leakage is common.
• Unbalanced systems with no airflow measurement. Many Maplewood systems have never had airflow measured at each register. Rooms that run too hot or too cold are often assumed to be equipment problems when airflow testing would reveal a distribution issue that can be corrected without a replacement.

How we diagnose and fix these problems: Our technicians measure static pressure and airflow at every register before recommending any equipment change. In many cases, duct sealing, rebalancing, or a targeted extension resolves comfort problems that a full system replacement would not have fixed. When equipment replacement is the right call, we assess the duct system alongside it so the new unit is not going into the same distribution problems the old one was fighting.

Commercial HVAC in Maplewood

Manchester Road is one of the most active commercial corridors in inner-ring St. Louis, and the mixed-use buildings, historic storefronts, and restaurants that line it have HVAC needs that differ significantly from a residential bungalow two blocks away.

Martin-Jetco Heating and Air Conditioning handles commercial HVAC for the full range of Maplewood business types:

• Restaurants and food service along Manchester Road and Greenwood Avenue, where kitchen exhaust, high occupancy loads, and temperature control for dining areas create distinct HVAC demands
• Retail tenants in Manchester Road's commercial strip and mixed-use buildings throughout the city
• Historic storefronts where equipment placement and building penetrations require careful coordination with the original construction
• Professional offices and medical offices throughout the city
• Mixed-use buildings where residential and commercial systems share a structure but need separate solutions

Commercial systems have different load profiles, uptime requirements, and service approaches than residential HVAC. A restaurant that cannot maintain dining room temperature during service hours, or a retail space that loses climate control during a heat wave, faces real financial consequences. Our team assesses each commercial property on its own terms.

Neighborhoods & Areas We Serve

Martin-Jetco Heating and Air Conditioning serves homeowners, property managers, and businesses throughout Maplewood, including the 63143 zip code and neighboring communities.

Service is available across Maplewood’s residential streets and historic areas, including the Greenwood Historic District, Ellendale, Lohmeyer Heights, Maple Lawn, and neighborhoods near Manchester Road, Big Bend Boulevard, Hanley Road, and Laclede Station Road. The team also serves homes around Maplewood streets with long local history, including Picadilly, Oxford, Cambridge, Manhattan, and Commonwealth.

Martin-Jetco Heating and Air Conditioning also serves homes and businesses near Schlafly Bottleworks, Saratoga Lanes, Deer Creek Park, the Maplewood Family Aquatic Center, the Maplewood-Manchester MetroLink station, the Sunnen MetroLink station, and the city’s recreation facilities. Commercial HVAC service is available for businesses along Manchester Road, Greenwood Avenue, Sutton Avenue, and nearby mixed-use corridors.

Families connected to MRH Elementary School, Maplewood-Richmond Heights Middle School, and Maplewood-Richmond Heights High School can reach Martin-Jetco Heating and Air Conditioning for HVAC service.

Frequently Asked Questions

What zip code does Martin-Jetco Heating and Air Conditioning serve in Maplewood?

Martin-Jetco Heating and Air Conditioning serves all of Maplewood and the 63143 zip code, along with neighboring communities including Brentwood, Richmond Heights, and Webster Groves.

My home was built around 1910 or 1920. What does adding central air actually involve?

Homes from that era were built for natural ventilation and radiator heat, not central air. Adding AC usually means choosing between new ductwork, when attic or crawl space routing allows it, or ductless mini-splits, which cool rooms independently with minimal disruption to plaster walls and original woodwork. An in-home evaluation shows which option fits the property.

Can I keep my radiators if I upgrade the heating system?

In most cases, yes. If a boiler is replaced with a new high-efficiency hot-water unit, existing cast-iron radiators can usually remain in service. They are durable and, when the system is properly balanced, effective. Our technicians evaluate the full radiator system before recommending whether to preserve or replace.

Should I replace my ductwork?

Not automatically, but the ductwork should always be assessed before new equipment is sized. Ductwork with minor leaks can often be sealed and rebalanced at a fraction of replacement cost. Ductwork that is severely undersized, degraded, or incompatible with a new system may need to be replaced to get meaningful results from new equipment. Our technicians measure airflow before recommending either path.

Can original ductwork be reused?

Sometimes. Our technicians assess existing ductwork for leakage, sizing, and condition before recommending whether to reuse, seal, modify, or replace it. In Maplewood homes where ductwork was added after original construction, modifications are frequently needed before a new system can deliver its rated efficiency.

Should I install zoning?

Zoning is worth considering when different areas of the home consistently run warmer or cooler than others and the existing system has the capacity to support it. In Maplewood homes with multiple levels, historic construction that limits duct modification, or additions that were never properly connected to the main system, zoning or a ductless mini-split for a specific area often resolves comfort problems that equipment replacement alone would not fix.

Are mini-splits worth it for a Maplewood home?

For many Maplewood homes, yes. Ductless mini-splits are particularly well-suited to homes where original plaster construction, narrow chases, or historic preservation concerns make running new ductwork impractical. They deliver both heating and cooling, require only a small wall penetration, and allow zone-by-zone temperature control. For rooms that have never been adequately served by the main system, they are often the most cost-effective long-term solution.

Can I add cooling without damaging the plaster?

Yes. Ductless mini-splits require only a small penetration through the wall for the refrigerant line, which preserves original plaster, lath, and woodwork. Where ductwork can be routed through attic or crawl space access without opening finished walls, conventional central air is also an option. Our evaluation determines which approach works for the specific property.

How much does duct replacement cost?

Duct replacement costs vary significantly depending on the size of the home, how much of the system needs to be replaced, and how accessible the duct runs are. In Maplewood's older homes with plaster construction, access is often the largest cost factor. Our evaluation scopes the ductwork alongside the equipment so the estimate reflects the full project.

My Maplewood home has been renovated, but the HVAC system looks original. How do I know if it needs replacing?

Age alone is not the only answer, but it is a starting point. A system from the 1990s that has never been serviced consistently is in a different place than a 1990s system that has been maintained. Our in-home evaluation looks at the equipment's actual condition, its efficiency, whether it is producing the right airflow, and whether any components are showing signs of wear that indicate declining performance.

How much does it cost to replace an HVAC system in Maplewood?

Replacement costs fall into two ranges:

• AC with evaporator coil: approximately $5,500 to $9,200
• Complete system (furnace and AC): approximately $8,450 to $22,990 or more

In Maplewood, where ductwork condition and equipment access vary considerably from one home to the next, the actual figure can move significantly within those ranges. Call (636) 205-1631 or request an estimate online.

How much does AC repair typically cost in Maplewood?

Component-level repair ranges:

• Capacitors, thermostats: $150 to $600
• Blower motors, evaporator coils: $500 to $2,000
• Compressor failures, control boards, heat exchangers: $700 to well over $1,000

Our NATE-certified technician confirms the exact cost after diagnosing the specific failure, then compares it against AC replacement before any work starts.

How much does furnace repair typically cost in Maplewood?

Common repair cost ranges:

• Ignitor and flame sensor: $180 to $350
• Furnace capacitor: $150 to $350
• Blower motor: $500 to $1,400+
• Control board: $700 to $1,650
• Heat exchanger: $2,000 to $4,000

At the control board and heat exchanger level, furnace replacement deserves a direct comparison before committing to the repair. Call (636) 205-1631 for a diagnostic visit.

Certain rooms in my home never reach the right temperature. What causes that in an older home?

In a home where ductwork was added after original construction, the routing often reflects what was possible at the time rather than what was optimal for the floor plan. Runs that are too long, too narrow, or that make unnecessary turns can leave specific rooms consistently underserved. It can also come from gaps and separations at duct joints that have developed over years of seasonal expansion and contraction. A technician should measure airflow at each register and trace the duct layout before recommending whether the fix is a repair, a rebalancing, or a zoning change.

My furnace heats for a few minutes, then shuts off before the house reaches temperature. What is happening?

A furnace that starts and stops short of completing a full heating cycle is almost always reacting to a safety shutdown. The most likely cause is a dirty or clogged filter restricting enough airflow that the heat exchanger overheats and trips the limit switch. Replacing the filter and letting the system cool down resolves it if that is the only issue. If the short-cycling continues after a filter change, the limit switch itself may be failing, the heat exchanger may have a crack, or a control board fault may be interrupting the cycle. A cracked heat exchanger is a safety concern, not just a performance issue, so call (636) 205-1631 if the problem persists.

Are heat pumps a good option for Maplewood homes?

Modern heat pumps handle Missouri winters considerably better than older heat pump models. The question is whether the existing ductwork can distribute conditioned air effectively enough for a heat pump to perform at its rated efficiency. Homes where ducts were informally added or never balanced may have distribution gaps that limit the benefit.

How often should HVAC systems in Maplewood be serviced?

Twice a year: before cooling season and before heating season. In Maplewood specifically, where homes can have ductwork from different eras, equipment that has changed hands multiple times, and construction that makes access more involved than in newer homes, pre-season inspections tend to surface problems earlier than they would in a more standard environment.

Is financing available for HVAC work in Maplewood?

Yes. Financing is available for qualifying projects. Our evaluation also covers rebates, applicable federal energy-efficiency tax credits, and any current seasonal promotions. You have the full cost picture before deciding.

Get the Right Answer for Your Maplewood Home

Whether you are adding cooling to a home that never had it, sorting out an uneven airflow problem that has bothered you for years, or facing a system that has simply run its course, Martin-Jetco Heating and Air Conditioning can help you work through it. Call (636) 205-1631 or schedule your evaluation online.