HVAC Company Serving Oakville, MO

Oakville sits where the Mississippi and Meramec rivers meet, and most of its homes were built between the 1940s and the late 1990s, a long enough stretch that the housing stock here covers several distinct generations of construction. A ranch home near Bee Tree Park built in the 1960s has different equipment, ductwork, and electrical capacity than a colonial built off Telegraph Road in the 1990s. Both are common in Oakville, and both deserve a technician who looks at the actual system in front of them rather than applying one answer to every address.

Martin-Jetco Heating and Air Conditioning has worked on South County homes since 1964 and remains family-owned. Licensed, NATE-certified technicians handle every visit, with the goal of giving you a clear, honest answer about what your system needs, whether that turns out to be a repair, a tune-up, or a full replacement.

Need HVAC help in Oakville? Call (636) 205-1631 or contact us online to schedule service with a licensed, NATE-certified technician from Martin-Jetco Heating and Air Conditioning.

HVAC Services Available to Oakville Homes & Businesses

Martin-Jetco Heating and Air Conditioning helps Oakville homeowners and businesses with the full range of heating, cooling, comfort, and system care needs, including:

• When your AC cannot keep up. AC repair, AC installation, and AC replacement for systems that are weak, aging, or ready for an upgrade 
• When the heat is unreliable. Furnace repair, furnace installation, furnace replacement, and heat pump services 
• When one area never feels right. Ductless mini-splits for additions, finished spaces, garages, workshops, and rooms that are hard to connect to existing ductwork 
• When the air feels dusty, dry, humid, or stale. Indoor air quality upgrades, including whole-home filtration, air scrubbers, humidifiers, and dehumidifiers 
• When you want fewer surprise breakdowns. HVAC maintenance and pre-season tune-ups before heavy cooling or heating demand 
• When the system quits after hours. Emergency HVAC service during evenings, weekends, holidays, and other times that cannot wait 
• When the system is more specialized. Boiler service, geothermal system work, and commercial heating and air conditioning

Martin-Jetco Heating and Air Conditioning installs York, Goodman, Daikin, Carrier, and Trane, giving you several equipment options when it is time to repair or replace your system. Financing is available for qualifying projects.

How Much Will an AC or Furnace Replacement Cost Me in Oakville?

Two ranges cover most residential HVAC replacements in Oakville:

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

What pushes a project toward the higher end:

• Home square footage and system tonnage required
• Ductwork that needs sealing, modification, or replacement
• High-efficiency variable-speed equipment with a strong SEER2 rating
• Zoning systems for homes where different levels or wings need separate control
• Electrical or code updates required before installation can proceed
• Indoor air quality equipment added to the project
• Equipment access in finished basements, additions, or tight mechanical spaces

For Oakville homeowners, an AC replacement with evaporator coil typically runs approximately $5,500 to $9,200, while a complete HVAC system replacement generally ranges from $8,450 to $22,990 or more. The age and condition of the home's existing ductwork plays a larger role in Oakville than in newer communities, since a meaningful share of the housing stock predates current duct sizing standards. 

A visit to the property is the only way to know where your project actually lands. Request an estimate online or call (636) 205-1631 to get pricing based on your Oakville home, your ductwork, and the equipment needed.

How Much Should You Expect to Pay for an HVAC Repair in Oakville?

Use these figures to put a repair estimate in context before deciding between repair and AC Replacement or Furnace Replacement:

• 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

These figures are a starting point, not a quote. The technician confirms the actual cost once the specific part and the labor involved are identified during the visit, and walks through how that figure compares to the cost of replacing the system outright.

Have a repair quote you want a second opinion on? Call (636) 205-1631 or message us online. We would be happy to give you an honest quote based on your needs.

Ways to Make HVAC Replacement More Manageable

A new system is a major purchase, but the estimate is not always the final number you have to plan around. When Martin-Jetco Heating and Air Conditioning visits your home, the team also looks at programs and payment options that may help reduce the upfront cost or spread it out.

Your estimate may include:

• Financing for qualifying projects so the cost can be divided into predictable monthly payments 
• Spire utility rebates filed for you when eligible equipment is installed 
• Federal energy-efficiency tax credits for qualifying heat pumps, high-efficiency furnaces, and AC systems 
• Current seasonal offers that may be available at the time of your estimate 

Before you decide, Martin-Jetco Heating and Air Conditioning shows you the equipment cost, payment options, and any savings that may apply, so you can compare the full cost clearly.

When Heating or Cooling Fails, Call (636) 205-1631

A system failure does not wait for a convenient time, and Martin-Jetco Heating and Air Conditioning does not make Oakville homeowners wait for one either. Emergency HVAC service is available at any hour, including evenings, weekends, and holidays, with licensed, NATE-certified technicians dispatched as quickly as conditions allow.

Calling in the morning typically means same-day service, with a technician at the door that afternoon or sooner. The technician diagnoses the problem on site and explains what is happening and what it would take to fix before any work is authorized or priced. There is no guesswork about cost: you hear the repair quote, decide, and the work begins from there. Most repairs are completed the same visit or fully scheduled within 24 to 48 hours of the first call.

If waiting until tomorrow is not an option, call (636) 205-1631 now and get clear next steps for your heating or cooling repair.

What HVAC Problems Are Common in Oakville Homes?

Oakville's mix of construction eras, riverside terrain, and established neighborhoods produces a fairly consistent set of HVAC conditions. Here is what Martin-Jetco Heating and Air Conditioning's technicians encounter most often on calls throughout the area:

• Ductwork that predates current system standards. A significant portion of Oakville's housing was built between the 1940s and 1970s, and the duct systems in those homes were sized for the equipment of that era. Pairing a modern high-efficiency unit with original ductwork that was never resized limits performance and can shorten the life of the new equipment.
• Split-level and ranch layouts with airflow imbalances. These floor plans, common throughout Oakville's older subdivisions, often have duct runs that favor one level over another. The result is a main floor that holds temperature well while an upper level or finished basement consistently lags behind.
• Finished basements near the river bluffs. Oakville's terrain near the Mississippi and Meramec rivers means many homes have basements that deal with more ambient moisture than homes on higher, drier ground. A finished basement in one of these properties can develop a humidity problem that the upstairs system was never built to manage.
• Homes that have changed since the original system was installed. An addition, a converted garage, or a finished attic adds living space without always extending the HVAC system to match. The added square footage relies on whatever conditioned air happens to reach it, which is rarely consistent comfort.
• Equipment reaching the end of a long service life. With a large share of Oakville's housing dating to the 1970s through 1990s, plenty of systems are now well past their original installation and approaching or past the point where another repair stops making sense compared to the cost of AC replacement or furnace replacement.

Not sure whether the problem is the system, the ductwork, or the layout of the home? Call (636) 205-1631 and our NATE-certified technicians can take a closer look.

Neighborhoods & Areas We Serve in Oakville

Martin-Jetco Heating and Air Conditioning serves homeowners and businesses throughout Oakville, including the 63129 zip code and nearby South County communities. The team works across established residential areas around Telegraph Valley, Heintz Road and Heintz Valley, Spencer Creek, and Prairie Dell.

Service is available near Cliff Cave County Park, Bee Tree County Park, the St. Louis County Library Cliff Cave Branch, Oakville Shopping Center, and the commercial areas along Telegraph Road and Forder Road. The team also serves homes and businesses along Telegraph Road, Forder Road, Yaeger Road, Milburn Road, and the I-255 corridor.

Families connected to Oakville Elementary, Oakville Middle School, Oakville High School, Wohlwend Elementary, and nearby Mehlville School District schools can call Martin-Jetco Heating and Air Conditioning for HVAC service in this part of South County.

Keeping Your HVAC System Reliable Year After Year

The Martin-Jetco Heating and Air Conditioning Home Comfort Agreement keeps your system inspected and ready before each season rather than waiting until something goes wrong:

• Two visits annually, one before cooling season and one before heating season
• Full equipment inspection at each visit, with developing issues identified while they are still manageable
• 20% off parts and labor on repairs needed between scheduled visits
• No rate increase for evening or weekend calls
• Priority scheduling when an unplanned issue comes up
• Reduced diagnostic fee on calls during regular business hours
• Documented HVAC Maintenance records satisfying most manufacturer warranty requirements

Call (636) 205-1631 to ask about the Home Comfort Agreement and get a maintenance plan that keeps seasonal inspections from falling through the cracks.

Six Decades of Service, One Family the Whole Way Through

Martin-Jetco Heating and Air Conditioning has worked on St. Louis-area homes since 1964 and is still family-owned today. That history shows up in how the company operates, not just how long the sign has been up:

• Built on repeat business. A meaningful share of Martin-Jetco Heating and Air Conditioning's work comes from homeowners calling back for a second or third project, or referring a neighbor after a job well done.
• A York Dealer of the Year, more than once. This recognition goes to dealers who consistently meet a manufacturer's standards for training, service quality, and customer satisfaction.
• An A+ rating with the Better Business Bureau. A rating that reflects how complaints, if any arise, actually get resolved.
• Six Angie's List Super Service Awards. Earned year over year based on verified customer reviews.
• Licensed, NATE-certified technicians on every job. NATE certification is the industry's leading independent technical credential, which means the person at your door has been tested on real-world HVAC competency.

If you'd like a sense of what working with the team is actually like, our 1,000+ 5-star Google reviews are a good place to start, written by homeowners across the region who have had our technicians out to their own homes.

Frequently Asked Questions

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

Martin-Jetco Heating and Air Conditioning serves Oakville and the 63129 zip code, along with neighboring South County communities.

My Oakville home was built in the 1960s or 1970s. What should I expect from a replacement project?

Homes from this era typically have ductwork that was designed around older, less efficient equipment, which means a straightforward equipment swap is not always enough to get the most out of a new system. The evaluation looks at whether the ductwork needs sealing or resizing, whether the electrical panel can support modern equipment, and how the home's layout affects airflow, so the estimate reflects the complete scope rather than just the unit itself.

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

An AC replacement with evaporator coil runs approximately $5,500 to $9,200. A complete HVAC replacement runs approximately $8,450 to $22,990 or more. Home size, ductwork condition, equipment efficiency, and installation complexity are the primary factors. Call (636) 205-1631 or request an estimate online for a figure based on your specific home.

How much does AC repair typically cost in Oakville?

Smaller repairs such as capacitors and thermostats generally run $150 to $600. Blower motor replacements run $500 to $1,400 or more, and evaporator coil repairs $600 to $2,000. Compressor-related failures tend to be the most expensive, often well past $1,000. Martin-Jetco Heating and Air Conditioning explains the repair cost and how it stacks up against replacement before any work begins. Call (636) 205-1631 to book an HVAC evaluation.

How much does furnace repair typically cost in Oakville?

Ignitor replacement and flame sensor cleaning generally run $180 to $350. Furnace capacitors are $150 to $350, and blower motors $500 to $1,400 or more. Control board repairs run $700 to $1,650, and heat exchanger work $2,000 to $4,000. At those higher figures, comparing the furnace repair cost directly against furnace replacement is worth doing before committing. Call (636) 205-1631 to request a repair estimate.

My basement feels damp even though the rest of the house is comfortable. Is that an HVAC issue?

Often, yes, particularly in homes near Oakville's river bluffs where ambient moisture levels run higher than on drier, higher ground. A finished basement that was never specifically accounted for in the home's original HVAC design tends to hold humidity that the main system was not built to manage. A whole-home indoor air quality solution, sometimes paired with a dedicated dehumidifier, is often what finally resolves a persistent lower-level humidity problem.

Why does my AC run constantly without actually cooling the house?

A handful of causes are common: a dirty filter restricting airflow, low refrigerant, a frozen evaporator coil, a failing capacitor, a fouled outdoor condenser, or ductwork that is leaking conditioned air before it reaches the rooms that need it. In Oakville's older homes specifically, undersized or degraded original ductwork is a frequent contributor that gets overlooked when homeowners assume the equipment itself is the problem. A technician needs to check refrigerant levels, measure airflow at the registers, and inspect the duct system before confirming whether the fix is a simple AC repair or something more involved.

My furnace runs but the air coming out is cold. What does that mean?

This usually means the blower fan is operating while the burners are not producing heat, which can happen for several reasons: a tripped limit switch, a control board fault, an ignition failure, or a flame sensor that is too dirty to read the flame correctly. A clogged filter can also trigger this by causing the system to overheat and shut down the burners as a safety measure while the fan keeps running. Because gas and combustion components are involved, call (636) 205-1631 rather than repeatedly resetting the system.

Do heat pumps make sense for Oakville homes?

For many homes, yes. Martin-Jetco Heating and Air Conditioning offers heat pump services that combine heating and cooling into a single system, and current equipment performs considerably better in Missouri winters than older heat pump models did. The home's insulation, ductwork condition, and typical winter heating demand all factor into whether a heat pump alone is sufficient or whether a dual-fuel setup with a backup furnace makes more sense for the coldest stretches of the year. Our in-home evaluation walks through both options; book one online today.

How often should an HVAC system in Oakville be serviced?

Twice a year is the standard: once before cooling season and once before heating season. Given how much of Oakville's housing stock has older ductwork and equipment that has already been through one or more replacement cycles, staying on a consistent maintenance schedule tends to catch developing issues earlier than it would in newer construction. Professional HVAC maintenance also satisfies most manufacturers' requirements for keeping a warranty active.

Is financing available for HVAC work in Oakville?
Yes. Financing is available for qualifying projects. The evaluation also covers Spire rebates, applicable federal energy-efficiency tax credits, and any current seasonal offers, so you have the complete cost picture before making a decision.

Get Clear HVAC Answers for Your Oakville Home

Whether your system is underperforming, you are comparing repair and replacement, or you want to get ready before the next season, Martin-Jetco Heating and Air Conditioning can help you understand the best next step. Call (636) 205-1631 or message us online to schedule service.