HVAC Company Serving Sunset Hills, MO

Paying to fix a system that is nearing the end of its life is a frustrating cycle. Martin-Jetco Heating and Air Conditioning helps you figure out whether the next repair makes sense or whether a new system is the better investment, then handles whatever comes next. Family-owned and operated since 1964, the team brings decades of South St. Louis County experience to every visit, whether that means diagnosing an aging ranch-home system or sizing a replacement for a newer custom build.

Not sure whether to repair or replace your heating or cooling system? Call (636) 205-1631 or contact us online and get a clear recommendation from NATE-certified technicians.

Our Complete HVAC Services

For homes and businesses throughout Sunset Hills, Martin-Jetco Heating and Air Conditioning provides:

• AC Repair
• AC Installation
• AC Replacement
• Furnace Repair
• Furnace Installation
• Furnace Replacement
• Heat Pump Services
• Indoor Air Quality
• Ductless Mini-Splits
• HVAC Maintenance
• Emergency HVAC Service

Additional services include boilers, geothermal systems, air scrubbers, whole-home humidifiers and dehumidifiers, air balancing, thermostat installation and repair, and commercial heating and air conditioning. For larger projects, financing may be available to help manage the cost.

What Does HVAC Replacement Cost in Sunset Hills, MO?

When repair no longer makes sense, replacement in Sunset Hills 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

The cost to replace an HVAC system in Sunset Hills typically ranges from approximately $5,500 to $9,200 for an air conditioner and evaporator coil replacement, while a complete system replacement generally runs from approximately $8,450 to $22,990 or more. 

Sunset Hills has a genuine mix of housing, from ranch homes built in the 1950s and 1960s to newer custom builds on the city's western edges, and that variety shows up in project costs. Older homes along corridors like Gravois Road and Watson Road often have ductwork that was never sized for today's high-efficiency systems, and larger or renovated newer builds may call for variable-speed equipment and zoning that push toward the upper end of the range.

An in-home evaluation is the only way to get a figure tied to your specific home. Book one online or call (636) 205-1631.

Reducing What a New System Costs You

Several programs help close the gap between the sticker price and what you actually pay:

• Financing that turns the cost into manageable monthly payments
• Spire rebates filed on your behalf at the time of installation
• Federal energy-efficiency tax credits on qualifying high-efficiency equipment
• Seasonal coupons that can trim the total further

We review all of it during your in-home evaluation, so cost, monthly payment, and available savings are clear before you commit.

How Fast Can You Get HVAC Help in Sunset Hills?

When heating or cooling goes down, the house becomes uncomfortable fast. Martin-Jetco Heating and Air Conditioning offers same-day and emergency HVAC service, including evenings, weekends, and holidays, dispatched by licensed, NATE-certified technicians.

Here is what response typically looks like:

• Morning calls often mean same-day visits, sometimes with a technician at the door that afternoon or within the hour
• Early requests get early arrivals, so homeowners who reach out first thing typically get a technician on site before mid-morning
• After-hours and weekend calls reach a real person, with service dispatched quickly
• A diagnosis and repair quote arrive on the same visit, so nothing stalls while you wait on numbers
• Most repairs resolved within 24 to 48 hours of the first call

Read what South St. Louis County homeowners say about the experience: more than 1,000 five-star Google reviews are easy to check before you call.

Repair or Replace: Making the Right Call

Not every failing system needs to be replaced right away. Here is how Martin-Jetco Heating and Air Conditioning thinks through it:

• Age. Most air conditioners and furnaces give 12 to 15 years of dependable service. Past that, repair costs tend to climb.
• Refrigerant. A system still using R-22 is costly to service, since that refrigerant is no longer produced.
• The repair math. When a single repair approaches a third of what a new system would cost, replacement usually pays back within a few years.
• Comfort and bills. A system that runs constantly, leaves rooms uneven, or drives up energy bills is often losing efficiency faster than repairs can recover.

If repair is the better value, that is the recommendation you will get. Not sure which way the math points on your system? Call (636) 205-1631 and we’ll gladly guide you through the decision.

HVAC Challenges Common in Sunset Hills Homes

Sunset Hills incorporated in 1957, and the bulk of its residential development happened in the decades that followed. That history means a large share of the city's housing stock is now approaching or past the age where HVAC systems need serious attention. Here is what our NATE-certified technicians see most consistently in this area:

• Ranch and split-level homes with aging ductwork. Many local homes built in the 1950s, 1960s, and 1970s still run on the original ductwork, which was sized for the older, less efficient systems of that era. Pairing a new high-efficiency unit with undersized or leaky ducts limits what the equipment can deliver and raises energy bills.
• Finished basements. A finished lower level adds square footage that usually was not part of the original duct design, leaving it too warm in summer and too cold in winter unless the system is rebalanced or the space gets its own zone.
• Upstairs and second-floor cooling issues. In two-story and split-level homes, heat rises and collects in the upper level, especially in homes where ductwork supply to the upper floor was minimal from the start.
• Older electrical panels. Homes from the 1960s and 1970s sometimes have electrical panels that need updating before new high-efficiency equipment can be installed, which adds to project scope and cost.
• Humidity control. Missouri summers push humidity indoors, and a system that is oversized or short-cycling never runs long enough to pull moisture from the air, leaving rooms feeling cool but clammy. Proper sizing and, where needed, a whole-home dehumidifier address the root cause.
• Uneven room temperatures. Rooms that run consistently hotter or cooler than the rest of the house often point to airflow or ductwork problems rather than a failing system, and can frequently be corrected without a full replacement.

One of these describing your home? Our technician can tell you what you are actually dealing with in one visit. Schedule one online or call (636) 205-1631.

Neighborhoods & Areas We Serve in Sunset Hills

Martin-Jetco Heating and Air Conditioning serves homeowners and businesses throughout Sunset Hills, including the 63127 and 63128 zip codes, along with nearby South St. Louis County communities. The team serves established residential areas around Sunset Farm, Laumeier Valley Woods, Chateau Chura, Rambling Oaks, and Sunset Reserve.

Service is available near Laumeier Sculpture Park, Watson Trail Park, Minnie Ha Ha Park, and the commercial corridors along South Lindbergh Boulevard, West Watson Road, Gravois Road, Sappington Road, Robyn Road, Rott Road, and Tesson Ferry Road. The team also serves homes and businesses near the broader South County medical corridors, including the Mercy Hospital South area on Kennerly Road.

Families connected to Dressel Elementary, Sappington Elementary, Sperreng Middle School, and Lindbergh High School can call Martin-Jetco Heating and Air Conditioning for HVAC service throughout the broader Lindbergh School District area.

Protect Your Investment with the Home Comfort Agreement

A properly maintained system runs longer and more efficiently. The Martin-Jetco Heating and Air Conditioning Home Comfort Agreement keeps upkeep off your to-do list. Members receive:

• Two seasonal tune-ups, one before cooling season and one before heating season
• Priority scheduling when service is needed
• A discounted diagnostic fee on office-hours service calls
• 20% off parts and labor on service repairs
• No overtime fees
• A full safety and performance check at every visit
• Documented HVAC maintenance that satisfies most manufacturers' warranty requirements

Six Decades of Service in St. Louis County

Martin-Jetco Heating and Air Conditioning has been serving the St. Louis area since 1964, not long after Sunset Hills incorporated in 1957, and the company has been working in South St. Louis County homes ever since. That history means the team has seen every era of construction this area has produced, from the ranch and split-level homes built during Sunset Hills's early growth years to the larger custom builds that followed decades later, and knows what each generation of home tends to need.

Every technician is licensed and NATE-certified, and the company installs York, Goodman, Daikin, Carrier, and Trane, so the equipment recommendation fits the home rather than a single product line. No high-pressure sales tactics come with any of it, and if something needs a second look after the job is done, the team comes back and handles it.

The record is easy to check: more than 1,000 five-star Google reviews, an A+ rating with the Better Business Bureau, six Angie's List Super Service Awards, and repeated recognition as a York Dealer of the Year.

Frequently Asked Questions

What zip codes do you serve in Sunset Hills?

Martin-Jetco Heating and Air Conditioning serves all of Sunset Hills, including the 63127 and 63128 zip codes, along with neighboring South St. Louis County communities.

How much does HVAC replacement cost in Sunset Hills?

An air conditioner and evaporator coil replacement typically runs approximately $5,500 to $9,200, while a complete HVAC system replacement runs approximately $8,450 to $22,990 or more. Home size, ductwork condition, equipment type, efficiency rating, and installation complexity all determine where your project lands.

How much does AC repair cost in Sunset Hills, MO?

AC repair costs depend on the problem. Minor repairs such as capacitors ($150 to $450) or thermostats ($100 to $600) tend to fall on the lower end. More involved work, including evaporator coil problems ($600 to $2,000), blower motor issues ($500 to $1,400+), or compressor-related failures, can run well past $1,000. System age, refrigerant type, parts availability, and overall equipment condition also factor in. Martin-Jetco Heating and Air Conditioning explains the repair cost and how it compares to replacement so the decision is clear before you commit.

How much does furnace repair cost in Sunset Hills, MO?

Furnace repair costs in Sunset Hills depend on the part and how involved the fix is. Ignitor replacement typically runs $180 to $350, flame sensor cleaning $180 to $340, a furnace capacitor $150 to $350, and a blower motor $500 to $1,400 or more depending on access and motor type. More serious repairs, including heat exchangers ($2,000 to $4,000) or control boards ($700 to $1,650), cost significantly more and may raise the question of whether replacement is the smarter path. Call (636) 205-1631 to request for an estimate made for your home.

My home was built in the 1950s or 1960s. Does that affect my options?

It often does. Homes from that era sometimes have ductwork that was sized for older equipment, electrical panels that need updating, or insulation levels that fall short of what modern high-efficiency systems are built to pair with. An in-home evaluation identifies any of that up front so there are no surprises on project day.

Why is my AC running but not cooling my Sunset Hills home?

Several things can cause an air conditioner to run without cooling: a dirty air filter, low refrigerant, a frozen evaporator coil, a failing capacitor, a dirty outdoor condenser coil, ductwork problems, thermostat issues, or a system that can no longer keep up with Missouri humidity. In Sunset Hills homes with finished lower levels, split-level layouts, or rooms that have never felt quite right temperature-wise, airflow and system sizing can also play a role. A technician should measure refrigerant levels, check airflow, inspect the coil and condenser, and determine whether the issue is a simple repair or something larger going on with the system.

Why is my furnace blowing cold air?

Cold air from a furnace usually points to one of a handful of causes: a dirty filter, a thermostat issue, an ignition or pilot problem, a flame sensor failure, a gas supply interruption, a tripped limit switch, or a control board that has stopped communicating with the burners. In some cases, the blower stays on while the burners shut down, which is why the air feels cold even though the system is running. Because these issues involve gas and combustion components, the problem should not sit. Martin-Jetco Heating and Air Conditioning inspects the furnace, identifies the cause, and confirms the system is safe before returning it to service.

Are heat pumps a good fit for Sunset Hills homes?

For many homes, yes. Modern heat pumps cover both heating and cooling in one system, and newer models handle Missouri winters better than older heat pump designs did. Homes with efficient insulation and ductwork in good shape tend to get the most out of them. For properties where the heating demand on the coldest days is higher, a dual-fuel setup may make more sense. As part of our heat pump services, we evaluate the home, the ductwork, the insulation, and the homeowner's comfort goals before recommending systems.

How long does a new HVAC system typically last?

A properly sized and installed system that receives regular maintenance typically runs 12 to 15 years, and some hold up longer. Sunset Hills homes with older ductwork, finished lower levels, or rooms with high sun exposure can put more demand on a system, making seasonal tune-ups especially worthwhile. Spring AC tune-ups, fall heating inspections, clean coils, and timely filter changes all help extend equipment life and keep warranty coverage intact.

How long does installation take?

Most single-system replacements wrap up in one day. Projects that include ductwork corrections, zoning, or electrical updates may take longer, and Martin-Jetco Heating and Air Conditioning gives you a clear timeline during the evaluation.

Do you offer financing?

Yes. Financing options are available, and the team reviews rebates, federal energy-efficiency tax credits, and current seasonal offers during your visit so you see the full picture before deciding.

Have Questions About Your HVAC System in Sunset Hills?

Whether you are comparing repair versus replacement, pricing a new system, dealing with an emergency breakdown, or planning ahead with maintenance, Martin-Jetco Heating and Air Conditioning can help. Call (636) 205-1631 or schedule an in-home evaluation online today.