24/7 Emergency Service

HVAC emergencies happen when you least expect them. Contact the professionals at A+ Derr to take care of your issue. We have the necessary skills and tools to fix your system so you can safely use it once again. Call our team at 833-232-4328 to get emergency HVAC services in Louisville, KY, Evansville, IN, or the surrounding areas.

Call Today 833-232-4328 Schedule Online
SAVE $2,026 On New HVAC Systems
Limited Time Offer
Request Service

Reliable Heating Service in Evansville & Louisville

Installation, Repair, and Maintenance

Evansville and Louisville are wonderful places to live, but the winters here can get quite cold. That’s why it’s important to have a reliable heating system that keeps your home warm and safe. And when that heating system stops working, make sure your first call is to the heating service experts at A+ Derr.

Having trouble with your heating system? Give us a call at 833-232-4328 or contact us online!

Our Heating Services in Evansville & Louisville

Our team can quickly and accurately provide a variety of different heating services based on your needs, including:

Do you need help with home heating installation or repair? Call 833-232-4328 or request a quote online.

Local Heating Service For Evansville And Louisville Area Homes

Heating problems never pick a convenient day, especially when winter weather settles into the Ohio River Valley. If you live in Evansville, Louisville, or the surrounding communities, a breakdown can quickly make your home uncomfortable, affect plumbing in colder spots, and disrupt your routine. A+ Derr provides dependable heating service for homeowners across both markets, with scheduling that fits real life.

Evansville Area Neighborhoods And Nearby Cities We Commonly Serve

From the East Side to the West Side, we regularly help homeowners throughout Evansville, including areas around Downtown, Haynie’s Corner, West Franklin Street, Jacobsville, Newburgh, and the communities that connect along major routes like I-69, Lloyd Expressway, and US-41. We also serve nearby towns where many families commute for work and school, including Henderson, Boonville, Princeton, Mount Vernon, and areas throughout Vanderburgh and Warrick County.

Louisville Area Neighborhoods, Suburbs, And Common Corridors

In Louisville, heating needs vary by home style and age, from older properties closer to Cherokee Park and the Highlands to newer builds out toward the Gene Snyder Freeway. We frequently provide heating repair, replacement, and maintenance for homeowners across neighborhoods and surrounding areas such as St. Matthews, Middletown, J-Town, Jeffersontown, Okolona, Shively, Fern Creek, and the East End. We also serve nearby communities that connect to Louisville via I-64, I-65, I-71, and I-265, including Jeffersontown-area suburbs and cities like New Albany, Clarksville, Jeffersonville, and Shepherdsville.

Why Local Knowledge Matters For Heating Repairs

  • Older homes near historic districts and established neighborhoods often have aging furnaces, older duct layouts, or boiler systems that need careful troubleshooting.
  • Homes along busy corridors and commuter routes can experience higher dust buildup and filter clogging, which impacts airflow and system efficiency.
  • When temperatures drop, heat pumps may shift into auxiliary heat more often, which can surprise homeowners with higher energy costs if the system is not tuned correctly.

Fast, Practical Help When Heat Goes Out

If your furnace is short-cycling, your boiler is not heating evenly, or your heat pump is struggling to keep up, the best next step is an accurate diagnosis. A+ Derr can inspect your system, explain the most cost-effective path forward, and help you get back to reliable comfort.

Call 833-232-4328 or contact us online to schedule heating service in Evansville, Louisville, or a nearby community.

Heating Systems We Serve

If you need new heating equipment for your home, we are able to install and work on:

Check out our heating products.

Repairing Your Heating vs. Replacing Your Heating

Ultimately, the best way to tell if you need to repair your heating system or replace it is to have it professionally looked at, but some telltale signs that you may need to replace it are:

  • Your system is older than 15 years old
  • Some rooms in your home are too hot or cold
  • The heating system is overly noisy
  • The heating system needs to be repaired more than once a year

24/7 Heating Repair Services in Evansville & Louisville

Our team is aware that your home’s heating doesn’t only stop working during convenient business hours, so we are available 24/7 to ensure that someone is always available to help you when you need it.

Need emergency help with your home’s heating? Call us now at (877) 910-6045.

Benefits of Heating System Maintenance

technician performing heating service by working on a furnace

By having a regularly scheduled heating system check performed once a year, you can identify problems early on and save yourself money on costly repairs down the road. The A+ Derr team will thoroughly inspect your system, making sure everything is up to par to keep you warm all winter long.

Heating Service FAQ


In most Chicago-area homes, you don’t need to completely turn off your heating system during the summer. Modern furnaces and boilers are designed to remain idle safely when not in use, and shutting them down entirely can sometimes cause unnecessary wear or startup issues in the fall.

Instead of turning the system off, homeowners can:
Set the thermostat to “cool” or “off” mode so the furnace remains inactive until heating season returns.
Turn off the pilot light only if your system is very old and not electronic ignition — but note that most modern furnaces use automatic ignition, so there’s no energy benefit to shutting off a pilot light.
Keep power connected so the blower fan or controls can still function for air conditioning and ventilation.

If your furnace shares components with your air conditioning system (such as the blower motor or controls), you’ll want to keep it powered on so your AC can operate properly. Always consult your HVAC technician before manually turning off gas valves or pilot systems.


Yes — installing a new, high-efficiency furnace can increase your home’s value and appeal to potential buyers. In a climate like Chicago’s, buyers place strong importance on reliable, efficient heating.

Here’s how a new furnace boosts value:
Energy Efficiency: Newer models offer AFUE ratings of 90–98%, which translates into lower monthly energy costs.
Buyer Confidence: Prospective homeowners see a recently installed furnace as a sign the property has been well maintained and won’t require major near-term HVAC expenses.
Improved Comfort: Modern furnaces provide quieter operation, even heating, and better airflow — all strong selling points.
Warranty Transferability: Many manufacturers allow limited warranty transfer to the new owner, adding another layer of appeal.
Inspection Readiness: Updated HVAC systems can help your home pass pre-sale inspections with fewer issues.

In short, replacing an outdated furnace isn’t just about comfort — it’s an investment in your property’s resale potential and long-term efficiency.


If you have an older furnace with a standing pilot light, turning it off in the summer can save a small amount of gas — typically just a few dollars per month. However, relighting it in the fall can be inconvenient, and incorrect relighting can pose safety risks.

Most modern furnaces in Chicago-area homes now use electronic ignition systems, which don’t require a continuous flame, so there’s no savings benefit or need to shut anything off seasonally. For safety and performance, always follow your manufacturer’s instructions or contact an HVAC professional before making seasonal adjustments.


The ideal time to replace a furnace is during the off-season — late spring or early fall — before Chicago’s heating demand peaks. Scheduling early ensures better pricing, faster installation availability, and enough time for system testing before cold weather arrives.

If your furnace is 15 years or older, needs frequent repairs, or causes rising energy bills, upgrading before winter helps prevent unexpected breakdowns and ensures reliable comfort all season long.

Why Choose A+ Derr for Heating Service?

Friendly HVAC service team posing together outside office

A+ Derr has spent almost 50 years providing unsurpassed customer service to the greater Evansville and Louisville area by combining free estimates on replacement quotes and service calls with highly skilled technicians to create an experience that puts the customer front and center.

Experience the A+ Derr difference! Call (866) 387-3086 or contact us online to schedule excellent heating services with our team.

 

What are the benefits of regular heating system maintenance for homeowners?

Regular HVAC maintenance delivers several long-term benefits to homeowners, including improved comfort and safety, reduced energy costs, and extended equipment lifespan.

Heating experts recommend annual professional service for furnaces, boilers, and heat pumps to keep them operating optimally and avoid unexpected breakdowns during the heating season.

Here are seven HVAC maintenance benefits to consider:

1. Improves Efficiency & Reduces Energy Costs

Furnaces, boilers, and heat pumps are hard at work all winter. Dust, clogged filters, and misaligned parts make them work harder, reducing efficiency. A tune-up in the fall restores efficiency and helps homeowners save as much as 15% on heating bills by making sure the system runs at peak performance.

2. Extends Equipment Lifespan

Regular inspections can reduce stress on key components such as blower motors, belts, and ignition systems. A well-maintained furnace or boiler could last 5–10 years longer than a neglected one, helping you get the most out of your investment before replacement becomes necessary.

3. Prevents Unexpected Repairs

Technicians can spot worn or failing parts and take care of them before they cause a breakdown. Catching small issues early prevents expensive emergency repairs and keeps heating reliable when you need it most during the coldest months.

4. Improves Indoor Air Quality

HVAC maintenance includes cleaning and changing air filters as well as cleaning burners and coils. This removes dust, soot, and other allergens from the air and helps reduce respiratory irritants. This is especially important for families with allergies or pets.

5. Increases Safety

Furnaces and boilers create heat by combustion, which can release carbon monoxide if parts fail or vents get blocked. HVAC professionals check the heat exchanger, gas lines, and exhaust system for cracks, corrosion, and leaks that could cause dangerous gasses to enter the home.

6. Maintains Warranty Coverage

Most manufacturers require proof of annual professional maintenance to validate equipment warranties. Skipping maintenance could void coverage for parts and labor, leading to higher costs down the road.

7. Provides Consistent Comfort

Routine service keeps your thermostat calibrated, air flowing evenly, and all system components working in sync, reducing hot or cold spots and maintaining stable indoor temperatures throughout the season.

In summary: regular maintenance for your home’s heating equipment delivers measurable value in the form of lower utility bills, fewer breakdowns, longer system life, and safer operation, making it one of the most worthwhile services to schedule yearly as a homeowner.

Explore Heating Services

Choose the heating service you need below to get answers, options, and help fast.

Furnace Services
Repair, replacement, and maintenance for gas and electric furnaces.
Boiler Services
Help for boiler heat, radiators, circulation issues, and system upgrades.
Heat Pump Services
Efficient heating and cooling support, including performance and comfort issues.
Ductless Mini-Split Services
Zoned comfort for additions, basements, bonus rooms, and older homes.
Geothermal Services
Installation and service for geothermal systems and components.
Heating Products
Compare equipment options, efficiency features, and upgrade paths.
Start Saving Today With

Membership Perks

Start Saving Today With

Membership Perks

What To Expect

Discover The A+ Derr Difference

24/7 Heating & Cooling Repairs

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

Locally Owned & Operated

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

24/7 Heating & Cooling Repairs

Heating and cooling emergencies can happen on nights, weekends, and holidays, so you can trust us to be there no matter when you need us.

Licensed & Experienced Technicians

Our experts have the expertise and training to deliver the highest quality services every time.

100% Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every HVAC service we perform.

Servicing All Major Makes & Models Of Equipment

We are a Lennox Premier Dealer and also service on all makes and models of equipment, including Goodman, Amana, Carrier, Trane, Rheem & more!

Locally Owned & Operated

Since we’re based in Kentuckiana, we know the needs of Evansville, Louisville, and surrounding communities.

50+ Years in Business

For over 50 years, A+ Derr has provided high-quality service, products, and results for Kentuckiana's residents.

Review Image
Our Reviews

See What Your Neighbors Are Saying

I would recommend A+ Derr and their staff any day! Best service I have ever had! Go to them for your Heating and Cooling needs. You will not be disappointed.

Barbara C.

Barbara C.

Very good service. Knowledgeable HVAC experts always keeping us cool in the summer and warm all winter. This is a great team of professionals from start to finish.

Craig B.

Craig B.

Amazing level of courtesy and professionalism. Communication was great and the price was more than reasonable. Highly recommend.

Chip M.

Chip M.

Guys came and installed two full systems at the house. Respectful, cleaned up after themselves and answered any and all questions. Thank you again!! Definitely recommend!

Jason H.

Jason H.

Very knowledgeable and courteous. Toured me through all the functions of the new unit. Completed work very neatly and respectfully. Would recommend to anyone.

Derek S.

Derek S.