HVAC Company Serving Kirkwood, MO

Homes call for HVAC work that respects the house. Some homes near downtown Kirkwood were built long before central air became standard. Others have additions, finished attics, older radiators, undersized ductwork, or newer high-efficiency systems that need the right maintenance to keep performing.

Family-owned and operated since 1964, Martin-Jetco Heating and Air Conditioning handles heating and cooling for homes and businesses in Kirkwood, with licensed, NATE-certified technicians on every job. 

One call covers comfort through every season:

• Air Conditioning 
• Heating 
• Indoor Air Quality 
• Commercial HVAC 

From homes near Kirkwood Park to properties along Kirkwood Road, Manchester Road, Big Bend Road, Geyer Road, I-44, and the I-270 corridor, Martin-Jetco Heating and Air Conditioning helps match heating and cooling recommendations to the home’s age, layout, ductwork, and comfort goals.

Schedule HVAC service that starts with clear answers. Call (636) 205-1631 or contact Martin-Jetco Heating and Air Conditioning online today.

How Much Does HVAC Replacement Cost in Kirkwood?

When repair no longer makes sense, replacement in Kirkwood generally falls into two ranges:

• Air Conditioner & Evaporator Coil Replacement: approximately $5,500 to $9,200
• Complete HVAC System Replacement: approximately $8,450 to $22,990+

Factors that affect HVAC replacement pricing:

• Home square footage
• System tonnage requirements
• SEER2 efficiency rating
• Single-stage vs variable-speed equipment
• Existing ductwork condition
• Zoning systems
• Electrical or code upgrades
• Indoor air quality add-ons
• Accessibility of installation area

For Kirkwood homeowners, an air conditioner and evaporator coil replacement typically runs approximately $5,500 to $9,200, while a complete HVAC system replacement generally ranges from approximately $8,450 to $22,990+. The final cost depends on system size, SEER2 efficiency, equipment type, ductwork condition, zoning needs, electrical or code updates, indoor air quality upgrades, and how accessible the equipment is during installation.

Older Kirkwood homes can sit toward the higher end when a project involves creating or resizing ductwork, updating electrical to meet current code, or working carefully around finished, historic interiors. An in-home evaluation is the only way to size the system correctly and price the exact work your home calls for. Our NATE-certified technicians walk through every option with you before any work begins. Request an HVAC replacement estimate online or call (636) 205-1631.

Neighborhoods & Areas We Serve in Kirkwood

Over the past 12 months, Martin-Jetco Heating and Air Conditioning's technicians, comfort advisors, and installers completed more than 764 service calls in Kirkwood, including emergency service calls, HVAC system replacements, preventative maintenance, tune-ups, diagnostics, indoor air quality services, and repairs.

We serve homeowners and businesses throughout Kirkwood, including Downtown Kirkwood, Sugar Creek, Woodbine Heights, North Kirkwood, South Kirkwood, Meacham Park, and the surrounding mid-county communities. Service is available near Kirkwood Park, the Kirkwood Community Center, The Magic House, the Kirkwood Farmers' Market, the Kirkwood Train Station, Greentree Park, Meramec Highlands, Emmenegger Nature Park, and the National Museum of Transportation area.

The team also serves homes and businesses near Kirkwood High School, Nipher Middle School, North Kirkwood Middle School, Robinson Elementary, F.P. Tillman Elementary, and Westchester Elementary, along with homes and businesses along Kirkwood Road/Lindbergh Boulevard, Manchester Road, Big Bend Road, Geyer Road, Ballas Road, Dougherty Ferry Road, Essex Avenue, I-44, and I-270.

See why local homeowners call Martin-Jetco Heating and Air Conditioning. Read our 1,000+ five-star Google reviews.

Repair vs. Replace: A Quick Checklist

Not every HVAC problem means you need a new system. A repair may still make sense if the unit is newer, the issue is isolated, and the system has been reliable overall. Replacement is usually worth a closer look when:

• The system is 12 to 15 years old or older 
• Repairs are becoming more frequent 
• The repair cost is approaching a third of the cost of replacement 
• The system still uses R-22 refrigerant 
• Energy bills keep rising without a clear reason 
• Some rooms never reach the set temperature 
• The system struggles during very hot or very cold weather 
• You are planning other comfort upgrades, such as zoning, ductwork improvements, or indoor air quality equipment 

If you are weighing another repair against a new system, book an in-home HVAC replacement evaluation online or call (636) 205-1631.

Choosing a System That Suits an Older Home

Kirkwood was established in 1853, and a good number of its homes in and around Downtown Kirkwood predate central air conditioning entirely. Many more went up in the decades since, each bringing its own construction quirks. The most common challenges we work around include:

• Historic homes built before central air. These homes were designed around radiators, gravity furnaces, or no heating and cooling infrastructure at all, so adding modern comfort means choosing equipment that works with the home rather than against it.
• Older ductwork systems. Many homes still run on ductwork installed decades ago, often undersized for today's equipment or routed through spaces that have since been finished or walled in. Reusing it, resizing it, or replacing it entirely all change what a project costs and how long it takes.
• Boiler-to-forced-air conversions. Some homes still run on the original hot-water boiler and radiator system. Converting to forced air is possible but involves running new ductwork through a home that was never designed for it, which is a different project than a straight system swap.
• Plaster wall construction. Running new lines, ducts, or wiring through plaster walls and ceilings takes more care than drywall, since plaster cracks and patches differently. This affects both the method and the cost of any work that goes inside the walls.
• Limited attic space. Older roof lines often leave little room for ductwork, equipment, or even a ductless line set, which narrows the practical options for cooling upper floors and additions.
• Home additions. A sunroom, finished attic, or rear addition built years after the original house often was never connected to the main system, leaving that space to rely on window units or space heaters.

Martin-Jetco Heating and Air Conditioning installs across the full range, so the recommendation fits the house:

• Traditional central air and furnace systems for homes with sound ductwork
• Ductless mini-splits for additions, finished attics, or homes without ducts
• Boiler-to-forced-air conversions and radiant heating for homes built around hot-water heat
• Heat pump services and geothermal for owners focused on long-term efficiency

During the evaluation we look at the layout, ductwork, insulation, and wall construction, then match a system that heats and cools evenly without tearing up original woodwork or plaster to get there..

Solving Hot-Upstairs, Cold-Downstairs in Two-Story Homes

Many of Kirkwood's older two-story and story-and-a-half homes were built before even temperatures on every floor were an expectation, which is why the upstairs runs hot while the main level feels comfortable. Martin-Jetco Heating and Air Conditioning addresses that imbalance directly:

1. Air balancing to adjust airflow room by room across the existing system.
2. Zoning that lets the upstairs and downstairs hold different temperatures on separate thermostats.
3. A ductless mini-split to cover a converted attic, sunroom, or addition the central system never reached.

Which approach fits comes down to the home, and we walk through the trade-offs during an in-home evaluation.

Financing, Rebates, & Tax Credits

A larger project does not have to be paid all at once. Martin-Jetco Heating and Air Conditioning offers financing that turns the cost into predictable monthly payments, and the team files Spire utility rebates on your behalf at the time of installation. Qualifying high-efficiency equipment may also earn a federal energy-efficiency tax credit, and seasonal coupons can bring the total down further. We lay all of it out during your visit, so you can weigh equipment, monthly payment, and available savings side by side.

Same-Day & 24/7 Emergency HVAC Service Across Kirkwood

Heating and cooling tend to quit at the worst possible moment, on the hottest afternoon or the coldest night of the year. Martin-Jetco Heating and Air Conditioning offers same-day and emergency HVAC service, including evenings, weekends, and holidays. 

Many calls placed in the morning have a technician on site that same day, with a clear diagnosis and a repair quote before the visit ends, so a sudden breakdown does not stretch into days without comfort.

Need urgent HVAC help? Contact us onlineor call (636) 205-1631.

Rooted in the Area Since 1964

Martin-Jetco Heating and Air Conditioning has served the wider St. Louis area for more than 60 years, and the company is still family-owned and operated today. Every job is handled by licensed, NATE-certified technicians who know how to service the system you have and recommend the system that actually fits your home.

A few things worth knowing before you call:

• Experienced local team with roots in the St. Louis area dating back to 1964. 
• Licensed, NATE-certified technicians on every job. 
• Multiple equipment options from York, Goodman, Daikin, Carrier, and Trane, so recommendations are based on your home rather than one required brand. 
• A track record you can check with more than 1,000 five-star Google reviews, an A+ rating with the Better Business Bureau, six Angie's List Super Service Awards, and recognition as a York Dealer of the Year many years running. 
• No high-pressure sales tactics, just clear recommendations and room to make the decision at your own pace. 
• Accountability after the job, with a team that comes back, takes responsibility, and corrects anything that needs a second look.

Keep Your New System at Its Best with the Home Comfort Agreement

A new system rewards regular care, and the Martin-Jetco Heating and Air Conditioning Home Comfort Agreement keeps upkeep simple with one tune-up in spring before cooling season and one in fall before heating season. Membership also comes with:

• Priority scheduling when you need service
• A discounted diagnostic fee on service calls during office hours
• 20% off parts and labor on service repairs
• No overtime fees
• Lower energy use from a system kept running at peak efficiency
• A reduced risk of expensive major repairs down the road

On top of those perks, each seasonal visit includes a full safety and performance check that catches small problems early, and the documented HVAC maintenance satisfies the warranty requirement most manufacturers attach to their equipment.

Get the right HVAC fit for your home, not a one-size-fits-all answer. Call (636) 205-1631 or schedule an evaluation online.

Frequently Asked Questions

What zip code do you serve in Kirkwood? 

Martin-Jetco Heating and Air Conditioning serves all of Kirkwood, including the 63122 zip code, along with the surrounding mid-county communities.

Can you install HVAC in an older home without ductwork?

Yes. Ductless mini-splits are a common solution for homes that were never built for central air, and Martin-Jetco Heating and Air Conditioning also works with boilers, radiant heating, heat pumps, and traditional furnace-and-AC systems. The right recommendation depends on the home’s construction, existing equipment, comfort goals, and how much disruption the project would require.

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

An air conditioner and evaporator coil replacement runs approximately $5,500 to $9,200, while a complete HVAC system replacement runs approximately $8,450 to $22,990+. Home size, system tonnage, SEER2 efficiency rating, equipment type, ductwork condition, zoning needs, electrical or code updates, indoor air quality add-ons, and installation accessibility all affect where the estimate lands.

How much does AC repair cost in Kirkwood, MO?

AC repair costs in Kirkwood can vary widely depending on the problem. Minor repairs such as capacitors ($150 to $450), contactors, or thermostats ($100 to $600) tend to fall on the lower end. More involved repairs, such as refrigerant leaks, evaporator coil problems ($600 to $2,000), or compressor-related failures, can run well over $1,000. System age, refrigerant type, parts availability, and overall equipment condition can also affect the recommendation. We provide clear AC repair options so homeowners can compare repair cost against the long-term value of replacement.

How much does furnace repair cost in Kirkwood, MO?

Furnace repair costs in Kirkwood depend on the part, system age, and complexity of the repair. As a general guide, an ignitor replacement typically runs $180 to $350, a flame sensor $180 to $340, a capacitor $150 to $450, and a blower motor $500 to $1400+ or more depending on accessibility and motor type. Bigger repairs, such as a heat exchanger ($2,000 to $4,000) or control board ($700 to $1650), cost significantly more and may raise the question of whether replacement is the better long-term choice. We can help you decide whether furnace repair or furnace replacement is worth it based on safety, comfort, efficiency, and system age. Call (636) 205-1631 today.

How long does a new HVAC system last?

With regular maintenance, a quality HVAC system typically lasts 12 to 15 years, and some systems can last longer when they are properly sized, installed, and serviced. Kirkwood’s mix of older homes, additions, finished attics, and seasonal temperature swings can place steady demand on heating and cooling equipment. Spring AC tune-ups, fall heating inspections, regular filter changes, clean coils, and prompt attention to small issues can help extend equipment life, improve efficiency, reduce breakdowns, and protect manufacturer warranty coverage.

Should I repair or replace my air conditioner?

AC repair usually makes sense for a newer air conditioner with an isolated issue, especially when the repair is affordable and the system has been reliable. Replacement becomes the stronger option when the unit is 12 to 15 years old, still uses R-22 refrigerant, needs frequent repairs, struggles to control humidity, drives up energy bills, or faces a repair that approaches a third of the cost of a new system. Martin-Jetco Heating and Air Conditioning evaluates the system, explains repair cost, replacement cost, comfort concerns, and long-term value so homeowners can make a decision without pressure.

Why is my AC running but not cooling my Kirkwood home?

An air conditioner that runs but does not cool may have a dirty air filter, low refrigerant, a frozen evaporator coil, a failing capacitor, a dirty outdoor condenser coil, ductwork problems, thermostat issues, or an aging system that can no longer keep up with Missouri humidity. In Kirkwood homes with older ductwork, finished attics, additions, or story-and-a-half layouts, airflow and system sizing can also play a role. A technician should inspect the system, check refrigerant levels, measure airflow, evaluate the coil and condenser, and determine whether the issue is a simple repair or a sign of a larger system problem.

Why is my furnace blowing cold air?

A furnace may blow cold air because of a dirty filter, thermostat setting issue, pilot or ignition problem, flame sensor issue, gas supply problem, overheating limit switch, or malfunctioning control board. In some cases, the blower may continue running even though the burners are not producing heat. Because furnace problems can involve gas, combustion, and safety components, homeowners should not ignore the issue. We can inspect the furnace, identify the cause, explain the repair options, and make sure the system is operating safely before returning it to regular use.

Are heat pumps effective during Missouri winters?

Yes, modern heat pumps can be effective in Missouri’s climate because they provide both heating and cooling in one efficient system. Heat pumps work especially well during mild and moderate winter weather, and many newer systems are designed to perform better in colder temperatures than older models. For some Kirkwood homes, a dual-fuel setup or supplemental heat source may be recommended for the coldest days of the year. Martin-Jetco Heating and Air Conditioning can evaluate the home, comfort goals, insulation, ductwork, and energy usage to determine whether a heat pump is the right fit.

How often should HVAC maintenance be performed?

Most homes should have HVAC maintenance performed twice a year: once in the spring for the air conditioning system and once in the fall for the heating system. Regular maintenance helps improve efficiency, reduce unexpected breakdowns, extend equipment life, protect warranty coverage, and identify small issues before they become expensive repairs. In Kirkwood, where older homes, finished upper levels, and seasonal weather swings can put extra demand on heating and cooling equipment, seasonal maintenance is especially important.

Do you offer financing for HVAC replacement?

Yes. Martin-Jetco Heating and Air Conditioning offers financing and can review available Spire rebates, federal energy-efficiency tax credits for qualifying equipment, and current seasonal offers during your visit. Call (636) 205-1631 to learn about our payment options.

How quickly can someone come out?

Same-day and emergency HVAC service are available, including evenings, weekends, and holidays. Timing depends on the schedule, weather, technician availability, location, and the repair itself, but calling earlier gives Martin-Jetco Heating and Air Conditioning the best chance of getting someone to your home the same day.

Get Clear Answers About Your Kirkwood HVAC System

Whether you are comparing repair versus replacement, pricing a new air conditioner, dealing with an urgent heating or cooling issue, or trying to improve comfort in an older home, Martin-Jetco Heating and Air Conditioning can help. Call (636) 205-1631 or schedule your in-home evaluation online today.