HVAC Company Serving Hazelwood, MO

Hazelwood's housing stock runs the full range, from 1950s ranches in established subdivisions off Howdershell Road to newer developments near Lindbergh Boulevard and McDonnell Boulevard. Whatever the property, Martin-Jetco Heating and Air Conditioning has been handling HVAC work in North St. Louis County since 1964, and our NATE-certified technicians assess the full system before recommending anything.

A few things worth knowing before you call:

• A licensed, NATE-certified technician handles every visit, not a subcontractor
• Every diagnosis covers the system and the ductwork, not just the part that failed
• You get a firm price before any work begins
• Same-day and after-hours service is available every day of the week

A reliable HVAC system starts with a real diagnosis. Call (636) 205-1631 or contact us online to get clear pricing, honest options, and service from a NATE-certified technician.

What an HVAC Replacement Will Cost You in Hazelwood

Most residential replacements fall into two categories:

• 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 moves a project within those ranges:

• Square footage and the tonnage the system needs to handle
• Ductwork condition, including whether resizing, sealing, or replacement is needed
• Standard versus high-efficiency variable-speed equipment
• Zoning systems for homes with finished lower levels or additions
• Electrical or code updates before installation can proceed
• Indoor air quality additions included in the project
• Equipment access in finished basements or tight mechanical spaces

For homeowners, these ranges are only a starting point. A home near the airport corridor, a ranch with older ductwork, and a two-story with a finished lower level can all price differently once the equipment, airflow, access, and installation needs are checked. Martin-Jetco Heating and Air Conditioning reviews those details during the visit, then gives you a replacement price tied to your home and the system that will actually serve it.

If replacement is starting to look likely, call (636) 205-1631 to schedule an estimate and see which equipment options make sense for your home.

Is the Repair Worth It? A Guide to Common HVAC Repair Costs.

The right answer usually comes down to one comparison: what the repair costs against what a replacement would run. These ranges help frame that conversation before our technician confirms the specific diagnosis:

• 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

If your AC or furnace is acting up, call (636) 205-1631 to get the problem diagnosed and the repair cost confirmed before you decide what to do next.

Heating, Cooling & Air Quality Services in Hazelwood

Martin-Jetco Heating and Air Conditioning provides HVAC services in Hazelwood for homes and businesses, including heating repair, cooling repair, system replacement, maintenance, indoor air quality, and emergency service.

Services include:

• Air conditioning services. AC Repair, AC Installation, AC Replacement 
• Heating services. Furnace Repair, Furnace Installation, Furnace Replacement 
• Energy-efficient comfort options. Heat Pump Services and Ductless Mini-Splits 
• Indoor air quality services. Whole-home filtration, air scrubbers, humidifiers, dehumidifiers, and other indoor air quality upgrades 
• System care. HVAC Maintenance and Emergency HVAC Service 
• Specialty HVAC systems. Boilers and geothermal systems 
• Commercial HVAC. Heating and cooling repair, replacement, and maintenance for businesses 

Martin-Jetco Heating and Air Conditioning installs all major HVAC brands, including York, Goodman, Daikin, Carrier, and Trane. If you would like to get an idea of what working with us looks like, you can read our reviews before you call (636) 205-1631.

Who Shows Up at Your Door

Martin-Jetco Heating and Air Conditioning has been in business since 1964 and is still family-owned. Every technician carries NATE certification, the trade's leading independent credential. The company installs York, Goodman, Daikin, Carrier, and Trane, so the recommendation is based on what the home needs, not a required product line.

Our record is easy to check before you call:

• More than 1,000 five-star Google reviews from homeowners across the region
• A+ rating with the Better Business Bureau
• Six Angie's List Super Service Awards, based on verified customer feedback
• York Dealer of the Year, multiple times

Reducing What Replacement Costs Out of Pocket

A replacement that lands unexpectedly is a real budget disruption, and a few programs help close the gap between the estimate and what you actually spend. Our technicians review all of them during the in-home evaluation:

1. Financing for qualifying projects. For most homeowners facing an unplanned replacement, converting the total into a fixed monthly payment is the most practical path forward.
2. Spire utility rebates on eligible higher-efficiency equipment. Our team files these on your behalf at installation. No separate paperwork for you to track.
3. Federal energy-efficiency tax credits on qualifying heat pumps and high-efficiency furnaces. The amount depends on the specific equipment and the tax year. A tax professional can confirm how it applies to your situation.
4. Seasonal promotions that vary throughout the year. Ask about what’s available you call (636) 205-1631.

Protect Your HVAC System Before It Fails

A pre-season inspection in Hazelwood does more than check a maintenance box. In a home where original ductwork may have never been assessed and the equipment has been through more than one replacement cycle, a spring check before cooling season and a fall check before heating season give our technicians a real opportunity to catch developing problems while they are still manageable.

The Martin-Jetco Heating and Air Conditioning Home Comfort Agreement makes that inspection routine rather than reactive. Members receive:

• Pre-season visits before cooling and heating demand arrives each year
• Complete safety and performance inspection at each visit, with developing issues identified and explained
• 20% off parts and labor on any repair work between scheduled visits
• No premium for after-hours or weekend calls
• Priority scheduling when an unplanned service call comes up
• Reduced diagnostic fee on calls during regular business hours

Ask about the Home Comfort Agreement when you call (636) 205-1631.

What Our Technicians Find Most Often in Hazelwood Homes

Ranch homes built across three decades produce recognizable patterns. Here is what comes up consistently on our calls throughout Hazelwood:

• Aging ductwork that has never been assessed alongside the equipment. A system replacement that goes into unsealed or undersized original ductwork from the 1950s or 1960s consistently underperforms against its efficiency rating. The homeowner pays for a high-efficiency unit and gets lower-efficiency results because the distribution system was never addressed.
• Long duct runs in ranch layouts leaving far rooms underserved. One thermostat cannot accurately reflect what is happening in bedrooms at the far end of a long ranch floor plan. Supply air bleeds out through duct gaps and undersized runs before it reaches those rooms, and adjusting the thermostat does not fix the distribution problem.
• Systems entering a second replacement cycle on original ductwork. Many Hazelwood homes are on their second or third HVAC system, but the ductwork from the original installation has never been updated. Each replacement compounds the mismatch between modern equipment and infrastructure that was designed for a different era.
• Finished lower levels that were added without extending the duct system. Ranch homes across Hazelwood commonly had basements finished well after original construction. The lower level relies on whatever conditioned air drifts down from the main floor, which is not a substitute for proper supply. Our technicians can evaluate whether a duct extension, a zoning solution, or a ductless mini-split resolves it.
• Commercial HVAC demand from businesses near Lambert and McDonnell Boulevard. Hazelwood's position adjacent to Lambert International Airport and its Boeing facilities creates meaningful commercial HVAC work alongside residential calls. Industrial and office properties have different load profiles, and our team handles both.

Neighborhoods & Areas We Serve

Martin-Jetco Heating and Air Conditioning serves homeowners and businesses throughout Hazelwood, including the 63042 zip code and neighboring North St. Louis County communities. Service is available along major local corridors such as Howdershell Road, Dunn Road, Lindbergh Boulevard, James S. McDonnell Boulevard, Taylor Road, Utz Lane, and Missouri Bottom Road.

The team also serves homes and businesses near Howdershell Park, Harry S. Truman Park, White Birch Park and White Birch Bay, Brookes Park, Prairie Commons Branch Library, the Hazelwood Community Center, and the Hazelwood Sports Complex.

Families connected to Hazelwood School District schools can reach Martin-Jetco Heating and Air Conditioning for HVAC service throughout the area, including homes near Hazelwood West High School, Hazelwood West Middle School, Armstrong Elementary, Garrett Elementary, McNair Elementary, and Russell Elementary.

Frequently Asked Questions

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

Martin-Jetco Heating and Air Conditioning serves all of Hazelwood and the 63042 zip code, along with neighboring North St. Louis County communities.

My home was built in the 1960s. Where does a replacement project start?

Our evaluation starts with the ductwork, not the equipment. In a 1960s Hazelwood ranch, the duct system was sized for equipment standards that have changed substantially, and installing a modern system without addressing the distribution can limit performance significantly. Our technicians assess the ductwork alongside the equipment so the estimate reflects what the home actually needs, not just the unit swap.

The far bedrooms in my home are never as comfortable as the main areas. Can that be fixed without replacing the system?

Often, yes. In ranch homes with long duct runs, temperature gaps between the near and far rooms are typically a distribution problem. Our technicians measure airflow at each register, check for duct leaks or undersized runs, and determine whether a duct correction, a zoning adjustment, or some combination resolves it before recommending a full replacement.

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

Two categories cover most residential replacements:

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

Ductwork condition, home size, equipment type, and installation access all affect where a specific project lands. Call (636) 205-1631 or request an estimate online.

How much does AC repair typically cost in Hazelwood?

Repair costs by component:

• Minor repairs (capacitors, thermostats): $150 to $600
• Mid-range repairs (blower motors, evaporator coils): $500 to $2,000
• Major failures (compressor-related, control boards, heat exchangers): $700 to well over $1,000

Our technician confirms the exact cost after diagnosing the failure, then compares it against AC replacement before recommending a direction.

How much does furnace repair typically cost in Hazelwood?

Common repair 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, our technicians compare repair against furnace replacement before recommending either path.

My finished basement is always uncomfortable no matter what the thermostat says. What is going on?

In ranch homes where basements were finished after original construction, the lower level was rarely connected to the home's duct plan. It runs off whatever conditioned air finds its way down from the main floor, which is not designed airflow. Our technicians evaluate whether a duct extension, a zoning system, or a dedicated ductless mini-split for the lower level is the right fix for your specific layout.

My AC runs but certain rooms never cool down. What should our technicians check?

In Hazelwood's older ranch homes, uneven cooling is almost always a duct problem rather than a failing system. Long horizontal runs that were never sealed or properly sized lose supply air before it reaches the far rooms. Our technicians check refrigerant charge, measure airflow at each register, and inspect the duct system before confirming whether the fix is an AC repair, a duct correction, or something else.

My furnace turns on but shuts off before the house warms up. What does that mean?

A furnace that starts and stops short of completing a full heating cycle is almost always responding to a safety shutdown. A clogged filter restricts enough airflow to overheat the heat exchanger, which trips the limit switch and shuts the burners down while the fan keeps running. Replacing the filter and letting the system cool resolves it if that is the only cause. If the short-cycling continues, the limit switch itself may be failing, the heat exchanger may have developed a crack, or a control board fault may be interrupting the cycle. A cracked heat exchanger is a safety issue, so call (636) 205-1631 if a filter change does not solve it.

Are heat pumps a practical choice for Hazelwood ranch homes?

For a home with usable ductwork, a heat pump is worth evaluating directly against a traditional furnace and AC. For homes where the ductwork has distribution problems that were never corrected, our evaluation addresses those first, since they affect performance regardless of what equipment is installed.

How often does an HVAC system in Hazelwood need to be serviced?

Before cooling season and before heating season is the right cadence. In Hazelwood, where a meaningful share of the housing stock has original or early replacement ductwork and equipment through multiple service cycles, pre-season inspections give our technicians the best chance to catch problems before they turn into failures during peak demand. Documented HVAC maintenance also keeps most manufacturer warranties valid.

Is financing available?

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

Schedule HVAC Service in Hazelwood

Whether a system is showing its age, a comfort problem has never been properly diagnosed, or something needs attention today, Martin-Jetco Heating and Air Conditioning can help. Call (636) 205-1631 or schedule your evaluation online.