HVAC Company Serving Ladue, MO

When your heating or cooling starts slipping, the questions are the same whether you are in a newer build or a home that has stood for nearly a century: what is wrong, what will the fix cost, and who can you trust to do it right. 

Family-owned and operated since 1964, Martin-Jetco Heating and Air Conditioning answers all three, with honest pricing and a recommendation suited to your home and how you live in it. Whatever you are running, from a modern furnace and AC to a boiler that has heated the house for generations, an in-home evaluation from a licensed, NATE-certified technician is the place to start. 

From older equipment to modern upgrades, Martin-Jetco Heating and Air Conditioning can help you sort out the next step. Call (636) 205-1631 today or message us online.

Full-Service Heating & Cooling

Martin-Jetco Heating and Air Conditioning covers every part of home comfort.

• Air Conditioning: AC Repair, AC Installation, AC Replacement, Maintenance, Ductless Mini-Splits, Emergency HVAC Repair
• Heating: Furnace Repair, Furnace Installation, Furnace Maintenance, Heat Pump Service, Boilers, Geothermal Systems, Seasonal Heating Maintenance
• Indoor Air Quality: Indoor Air Quality Upgrades, Air Scrubbers, Air Filtration, Whole-Home Humidifiers Dehumidifiers, Air Balancing, Thermostat Installation and Repair
• Commercial HVAC: Commercial Heating and Commercial Air Conditioning for Businesses

For larger repairs or replacement projects, financing may be available to help make the cost more manageable.

How Much Does HVAC Replacement Cost in Ladue?

When repair no longer makes sense, replacement in Ladue 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 Ladue 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 the size of the home, the equipment selected, SEER2 efficiency, ductwork condition, zoning needs, electrical or code updates, indoor air quality upgrades, and how easy the system is to access. Specialized equipment, including high-efficiency boilers and geothermal systems, is quoted separately.

Older homes with radiator heat, limited ductwork, finished interiors, additions, or multiple HVAC systems may need a more specific replacement plan than a standard equipment swap. An in-home evaluation helps Martin-Jetco Heating and Air Conditioning review the system, the structure, and the installation options before giving you a firm estimate.

Want an exact price before you commit? Book an in-house evaluation online or call (636) 205-1631. 

Sudden Cooling or Heating Breakdown? Call (636) 205-1631 for Emergency HVAC Service.

When a boiler goes cold overnight or an air conditioner fails during a heat wave, Martin-Jetco Heating and Air Conditioning offers emergency HVAC service including evenings, weekends, and holidays, with licensed, NATE-certified technicians dispatched as quickly as possible.

• Morning calls often result in same-day visits, with a technician on site that afternoon or sooner
• After-hours calls reach a real person, with service dispatched quickly
• A diagnosis and repair quote come on the same visit, so nothing stalls while you wait on numbers
• Most repairs are resolved within 24 to 48 hours of the first call

Choosing a company during a breakdown is easier when you know what other homeowners experienced. Read our 1,000+ five-star Google reviews before you call (636) 205-1631.

Offsetting the Cost of a New System

A replacement is a major purchase, and a few programs help bring the number down. Martin-Jetco Heating and Air Conditioning walks through each one during your visit:

• Financing that spreads the cost into predictable monthly payments
• Spire utility rebates, filed on your behalf at the time of installation
• Federal energy-efficiency tax credits, which can be meaningful on high-efficiency furnaces, boilers, heat pumps, and qualifying AC systems
• Seasonal coupons and current offers that may help lower the final cost 

You see equipment cost, monthly payment, and available savings together, so the full picture is clear before you decide.

What Ladue Homes Often Need That Standard Replacements Miss

Ladue's housing spans multiple eras and building styles, from grand mid-century estates along Warson Road and Litzsinger Road to renovated historic properties near the Conway area and newer custom builds throughout the city. That variety means HVAC challenges here are genuinely different from one property to the next:

• Boiler and radiator systems. Many older homes still heat with hot-water boilers and cast-iron radiators, equipment that was built to last and often still performs well when maintained properly. Martin-Jetco Heating and Air Conditioning services, repairs, and upgrades boiler systems, and can evaluate whether a boiler repair, a modern high-efficiency boiler replacement, or a conversion to forced air makes the most sense for the home.
• Homes without central air. A radiator-heated home may have no ductwork at all, which means adding cooling requires a different approach. Ductless mini-splits can serve individual rooms or zones without opening walls, while homes where ductwork can be added discreetly may support a conventional central AC system.
• Limited ductwork. Some homes were built with partial or undersized ductwork added after original construction, which can lead to airflow problems, uneven temperatures, and systems that work harder than they should.
• Historic construction. Older plaster walls, lath construction, and original woodwork all affect what a replacement project involves and how equipment access is approached.
• Major home renovations and additions. A new wing, a finished lower level, or an expanded main floor changes the load a system has to handle. Equipment sized for the original footprint can fall behind once a renovation adds square footage or changes how air moves through the home.
• Multi-system homes. Larger Ladue estates often run two or more systems, each covering a different wing, level, or addition. Keeping those systems matched in age, efficiency, and capacity affects comfort across the whole property.
• Zoning and airflow balancing. Multi-level homes, additions, and homes with a mix of old and new construction often have areas that hold temperature differently from the rest of the house. Zoning and airflow adjustments can address those inconsistencies without requiring a full system overhaul.

Make sure your replacement plan accounts for the whole home with an in-home evaluation. Call (636) 205-1631 to book or schedule online.

Professional HVAC Experience for Every Property in Ladue

A home with a 1940s boiler and a home with three modern HVAC systems call for genuinely different expertise. Martin-Jetco Heating and Air Conditioning has served this community since 1964 and remains family-owned and operated, with extensive experience serving Ladue homeowners across every era of construction and every type of equipment. 

Every visit is handled by licensed, NATE-certified technicians who install York, Goodman, Daikin, Carrier, and Trane, and service equipment well beyond those brands. After installation or repair, Martin-Jetco Heating and Air Conditioning stays available for maintenance and follow-up so the system continues to get the care it needs.

Homeowners who want to take a closer look can check out more than 1,000 five-star Google reviews.

Neighborhoods & Areas We Serve in Ladue

Martin-Jetco Heating and Air Conditioning serves homeowners and businesses throughout Ladue, including the 63124 zip code and nearby inner-ring communities, with extensive experience across the area's residential streets and subdivisions.

Service is available near Log Cabin Lane, Willow Hill Road, Fair Oaks Drive, the Conway Road area, and Ladue Estates, as well as near Tilles Park, St. Louis Country Club, Old Warson Country Club, Conway Park, Plaza Frontenac, and Ladue Crossing. The team also serves homes and businesses along Ladue Road, Clayton Road, Warson Road, Price Road, McKnight Road, Litzsinger Road, Conway Road, Lindbergh Boulevard, and the I-64 corridor, including families and institutions connected to Reed Elementary, Spoede Elementary, Ladue Middle School, Ladue Horton Watkins High School, John Burroughs School, and MICDS.

Actual recommendations depend on the system, the home, and the homeowner's goals. Every visit starts with a diagnosis, clear options, and room to compare repair, replacement, HVAC maintenance, zoning, or indoor air quality improvements.

Every one of these projects started with a diagnosis and a clear set of options. Call (636) 205-1631 or schedule a visit to do the same for your home.

Adding Efficient Cooling to a Home Built Around Radiator Heat

Homes heated by radiators may have limited or no ductwork, which makes cooling more specific to the home. In those cases, adding air conditioning does not always mean opening walls or forcing a conventional system into a space that was not built for it.

For homes without ducts, ductless mini-splits can cool specific rooms or zones with limited disruption. Where ductwork already exists or can be added discreetly, a high-efficiency central AC system may be the better fit. Martin-Jetco Heating and Air Conditioning looks at the home’s construction, the rooms you most want to cool, available equipment space, and your budget before recommending an approach.

Maintenance That Extends the Life of Any System

Whether your home runs on a boiler, a furnace and AC, or a mix of both, regular service keeps it efficient and adds years to its life, which is worth real money on the equipment these homes use. The Martin-Jetco Heating and Air Conditioning Home Comfort Agreement makes that routine, with benefits that include:

• Two seasonal tune-ups a year, one before cooling season and one before heating season
• 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
• A full safety and performance check at every visit
• Documented maintenance that keeps your manufacturer warranty in good standing

Ready for clear options on repair, replacement, or maintenance? Call (636) 205-1631 or schedule service online.

Frequently Asked Questions

What zip code do you serve in Ladue? 

Martin-Jetco Heating and Air Conditioning serves all of Ladue, including the 63124 zip code, along with the neighboring inner-ring communities.

Can you add central air to a home that only has radiator heat?

Yes. For a home with no existing ductwork, a ductless mini-split system can add cooling without major construction. Where ducts are present or can be added discreetly, a conventional AC system may be the better option. Martin-Jetco Heating and Air Conditioning recommends the right approach after reviewing the home's construction, equipment space, electrical needs, comfort goals, and budget.

Do you work on oil furnaces?

Yes. Martin-Jetco Heating and Air Conditioning services older oil-fired equipment in homes that still rely on it. The technician can inspect the system, explain repair options, and review whether continued service, replacement, or conversion to another heating setup makes the most sense for the home.

How much does HVAC replacement cost in Ladue?

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, boiler or radiator configuration, zoning needs, electrical or code updates, indoor air quality add-ons, and installation accessibility all affect where the estimate lands. Specialized equipment, including high-efficiency boilers and geothermal systems, is quoted separately.

How much does AC repair cost in Ladue, MO?

AC repair costs in Ladue 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 also affect the recommendation. Martin-Jetco Heating and Air Conditioning provides clear options so homeowners can compare repair cost against the long-term value of replacement. Book AC repair service by calling (636) 205-1631.

How much does furnace repair cost in Ladue, MO?

Furnace repair costs in Ladue depend on the part, system age, and complexity of the repair. As a general guide, ignitor replacement runs $180 to $350, flame sensor cleaning $180 to $340, capacitors $150 to $450, and blower motors $500 to $1400+ or more depending on access and motor type. Bigger jobs like a heat exchanger ($2,000 to $4,000) or control board ($700 to $1650) cost considerably more. Older equipment, oil-fired systems, and homes with boiler or radiator heat may require a more specific evaluation. Martin-Jetco Heating and Air Conditioning explains the options based on safety, comfort, efficiency, and system age. Call (636) 205-1631 and we’ll send a NATE-certified technician to help you decide.

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. Ladue homes with boilers, radiator heat, ductless systems, central air additions, older ductwork, or multiple HVAC systems may place different demands on 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?

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. In older Ladue homes, Martin-Jetco Heating and Air Conditioning can also review whether airflow, ductwork, or equipment access is contributing to the problem.

Why is my AC running but not cooling my Ladue 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 Ladue homes with older ductwork, limited ductwork, additions, radiator heat, finished upper levels, or multiple systems, airflow and system sizing can also play a role. A technician should inspect the system, check refrigerant levels, measure airflow, and determine whether the issue is a simple AC repair or a larger comfort 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. Martin-Jetco Heating and Air Conditioning can inspect the furnace, identify the cause, explain the repair options, and confirm the system is operating safely before returning it to regular use.

Are heat pumps effective during Missouri winters? 
Yes, modern heat pump services 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 perform better in colder temperatures than older models. For some Ladue 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, heating configuration, 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. Homes with boilers, radiators, ductless systems, or multiple HVAC systems may need maintenance tailored to the equipment in place. Regular maintenance helps improve efficiency, reduce unexpected breakdowns, extend equipment life, protect warranty coverage, and identify small issues before they become expensive repairs.

Will a high-efficiency system lower energy costs in a large older home?

It often can, especially when older equipment has lost efficiency or when the current system is not matched well to the home. A modern high-efficiency furnace, boiler, heat pump, or AC may use less energy, and pairing the system with ductwork, insulation, zoning, or humidity-control improvements can support better comfort. Martin-Jetco Heating and Air Conditioning can estimate the impact during the evaluation.

Let’s Find the Right Fit for the Home You Have

Whether you are maintaining a boiler, adding cooling to a radiator-heated home, comparing repair and replacement, or planning a higher-efficiency upgrade, Martin-Jetco Heating and Air Conditioning can help you sort through the options. Call (636) 205-1631 or schedule your in-home evaluation online today.