Reliable HVAC Service in Evansville Since 1975
When you need HVAC services in the Evansville area, you need A+ Derr. As a fourth-generation, family-operated business, we’ve been helping Evansville families stay comfortable in their homes since 1975. Our commitment to excellence means we’re there for you, no matter when you need us. We have 24/7 emergency and same-day service, so you know your HVAC systems will be running properly in no time. We also offer free estimates on service calls and replacement services. You’ll know you have the best price with expert and professional technicians. We love our customers, and we want you to know that your satisfaction is our priority. That’s why we offer a 100% satisfaction guarantee: “If you’re not happy with a product installed by us after the first year, we’ll buy it back.” For HVAC services you can trust in Evansville, call A+ Derr at 833-232-4328!Located at: 7545 Peachwood Dr. Newburgh, IN, 47630 When you live in the Evansville area, you can count on cold winters. That means you also need to be able to count on your heating system to keep your home warm and comfortable all winter long. If your heating system is not reliable anymore, contact A+ Derr. Our expert technicians will make sure your heating system is fixed quickly and efficiently. Our services include:
Don’t wait until the cold weather seasons to have your heating system checked. Contact us at 833-232-4328 to know your system will be ready when you need it most.
Air Conditioning Systems in Evansville, IN
You don’t want to be stuck in the middle of a humid summer without a working air conditioning system. But if that happens, it’s time to call the experts at A+ Derr. We can help with any of your cooling issues.
No matter what your cooling system needs are, we can help. We offer:
Our team is ready and able to help you feel cool and comfortable all summer long! Call 833-232-4328 or contact us online to schedule service.
Indoor Air Quality for Evansville
Have you ever thought about the quality of the air inside your home? It can be unpleasant to think about, but your home’s air can be filled with germs and bacteria. When you control the indoor air quality of your home, you can reduce germs and dust naturally. Plus, eliminating or reducing the number of particles in the air helps your HVAC systems run more efficiently. Because our homes have fewer leaks, it is easier to heat and cool them. But that also means germs, bacteria, and dust can linger in our homes, making us sick or causing our house to smell. Make sure your indoor air quality is good to help reduce asthma, allergies, and other conditions. Call 833-232-4328 or contact us online to learn more about how A+ Derr can improve your air quality!
Signs You Need HVAC Repair
With an investment like an HVAC system, you want to make sure it is working efficiently and effectively. But it can be difficult to tell when you should have your system repaired. Here are some signs to look for:
- Your system is not blowing the correct temperature air.
- Your thermostat is not working.
- Your system is making strange noises.
- You notice smells coming from your system.
If you think you may need your HVAC system to be repaired, our team of expert and professional technicians is ready to help you. We’re even available 24/7 for those issues that just can’t wait! If your heater or air conditioner needs repairs, you can count on A+ Derr! Call 833-232-4328 or contact us online.
How Long Should Your HVAC System Last?
With regular maintenance and proper care, your HVAC system should last at least 15 years. After that, the system will become increasingly inefficient, and it may be time to have it replaced. If you think you may need an HVAC system replacement, call the experts at A+ Derr. We offer free estimates for heating and air conditioning system replacements!
Benefits of Replacing Your HVAC System
No matter how well you maintain your HVAC system, at some point, it is going to be in your best interest to replace it. Having a professional inspect your system is the best way to know if it’s time to replace your HVAC. But before you have a technician come to your home, here are some telltale signs that a replacement is needed:
- Your system is more than 15 years old.
- Some rooms in your home are too hot or cold.
- Your heating system is noisy.
- It needs to be repaired more than once a year.
Choose A+ Derr for Your Evansville, IN HVAC Needs
A+ Derr is committed to exceptional customer service. We have been in business since 1975, and we understand what it takes to make sure your home is comfortable all year long. Our 100% Satisfaction Guarantee means you know you’ll be satisfied with your new system. For A+ HVAC services, choose A+ Derr! Contact us online or call 833-232-4328 to schedule service for your Evansville home.
Evansville HVAC FAQs
How does Ohio River humidity affect cooling in Evansville?
High moisture loads make short cooling cycles feel clammy. Longer, lower-speed operation and clean coils remove more moisture, which helps rooms feel cooler at the same setpoint.
What should I do before a same-day service visit?
Open all supply and return grilles, clear access to the air handler, thermostat, panel, and outdoor unit, and note when symptoms happen. If a coil is iced, set cooling Off and fan On until a technician arrives.
Which thermostat features actually help in our climate?
Look for dehumidify on cool, adaptive recovery, and staging control. These features favor steady operation that manages humidity and reduces swings.
Do I need permits when replacing HVAC equipment around Vanderburgh County?
Most equipment replacements require permitting and inspections for electrical and mechanical work. A+ Derr Heating & Cooling handles the paperwork and coordinates inspections.
What SEER2 rating is a good fit for Evansville summers?
Mid to high SEER2 systems paired with sealed ducts, verified airflow, and smart controls typically provide a strong balance of comfort and cost.
Why do some rooms stay warm even after a repair?
Duct balance and return paths may need attention. Adding returns to closed bedrooms, correcting undersized runs, and setting the right blower speed often evens out temperatures.
Are heat pumps practical here or should I stick with a furnace and AC?
Heat pumps work well for cooling and shoulder-season heating. Many homes stay with a dual-fuel setup that uses the heat pump most days and the furnace during colder snaps.
What maintenance tasks make the biggest difference before peak heat?
Replace filters on time, keep the outdoor coil clear of cottonwood and grass clippings, and make sure the condensate drain is flowing. A spring tune-up catches issues before a heat wave.
How can I reduce HVAC noise that carries through walls or patios?
Level the outdoor unit, maintain clearances, add vibration pads, and check that indoor returns are sized correctly. Flexible connectors and proper duct supports also help.
What should I check if the system will not start after a storm?
Give the thermostat and controls a few minutes for built-in delays, then check breakers and the outdoor disconnect. If a breaker trips again or the fan hums without spinning, power the system off and schedule service.
Recent Jobs and Reviews in Evansville, IN
Job Locations and Reviews
Completed annual planned maintenance on 9-month-old packaged HVAC unit during second visit as requested near end of day. Performed comprehensive system inspection with access panel removed, tested electrical components including amperage readings at 39.13 amps using digital multimeter, verified proper operation of motor and capacitor, inspected refrigerant lines and connections, and replaced 20x20x5 air filter per maintenance schedule.
Completed installation of a 2.5-ton, 13 SEER air conditioning system with matching evaporator coil. The new condensing unit was positioned and connected to the indoor coil assembly, with refrigerant lines routed through the attic space and properly secured to structural framing. All electrical connections, condensate drainage, and system controls were installed per manufacturer specifications, and the system was tested for proper operation.
Completed annual Gold Level planned maintenance on 6-year-old residential HVAC system. Performed comprehensive inspection of outdoor condenser unit, verified proper operation of all components, cleaned washable filter, and documented equipment condition with photographs. System operating within normal parameters; customer due for service agreement renewal.
Responded to no cooling complaint on 2-year-old residential HVAC system blowing warm air only. Upon inspection, discovered severely restricted airflow due to heavily clogged air filter saturated with dust, dirt, and debris. Removed and replaced contaminated filter with new unit, restoring proper system airflow and cooling operation. System tested and confirmed returning to normal cooling function following filter replacement.
# HVAC Maintenance Summary Completed Platinum Level annual maintenance on a 3-year-old HVAC system, including replacement of 25x25x5 filter, inspection of indoor air handler components and outdoor condensing unit, verification of proper system operation, and documentation of equipment condition through photographic records.
Completed comprehensive ductwork installation in crawl space and attic areas. Installed flexible metallic ductwork with proper support strapping, integrated reflective insulated piping for HVAC distribution, and ensured proper vapor barrier placement throughout the underfloor space. All ductwork was secured to structural joists per code requirements, with connections made to existing HVAC system components including white PVC drainage lines.
Conducted comprehensive HVAC system replacement estimate at residential property with existing operational equipment. Evaluated outdoor condensing unit positioned on gravel pad against brick exterior wall, assessed refrigerant line routing and structural mounting conditions. Inspected interior ductwork system including flexible aluminum ducting, examined basement ceiling-mounted distribution network, evaluated existing electrical connections and junction box locations to determine replacement specifications and compatibility requirements for new high-efficiency system installation.
Completed Platinum Level maintenance on single-system residential HVAC unit with 16x25x5 filter. Found filters heavily soiled due to pet dander and recommended increased filter replacement frequency. Inspected furnace/air handler, ductwork connections, condensate drain pan, and all associated mechanical components with no operational issues noted.
Completed planned HVAC maintenance inspection, reviewing 16x20x5 filter that has been in service for 3 years with monthly monitoring protocol. Performed diagnostic measurements using digital multimeter at system grille, recording electrical readings of 4131, and documented supply air temperature of 58°F using calibrated digital thermometer to verify proper system operation and airflow performance.
Relocated outdoor air conditioning condenser unit to accommodate active sewer excavation work on property. Safely disconnected refrigerant lines and electrical connections per manufacturer specifications. Constructed temporary wooden platform support system spanning excavated utility access area to maintain unit stability and clearance during construction. Positioned condenser on elevated platform to protect equipment from ground disturbance and debris while maintaining proper airflow clearances. Verified all refrigerant lines remained secure and undamaged during relocation process. Unit temporarily repositioned to ensure safety of construction personnel and equipment while sewer repairs are completed.
Responded to no cooling complaint on 10-year-old residential air conditioning system. Upon arrival, performed comprehensive diagnostic evaluation of both indoor air handler unit located in utility closet and outdoor condenser unit. Verified no ice buildup present on evaporator coil or refrigerant lines at indoor unit. Inspected outdoor condenser unit positioned on concrete pad against exterior wall, noting proper drainage and clear airflow around unit. Conducted system operational testing, checked refrigerant pressures, evaluated electrical connections at disconnect box, and assessed overall equipment performance. Documented equipment condition with photographic records of both indoor and outdoor components for service history.
Completed warranty callback to diagnose HVAC system issue. Performed diagnostic testing using refrigerant manifold and micron gauge, recording system pressures, temperatures, superheat, and subcooling values. Identified faulty high pressure switch preventing system operation. Documented model and serial number information, photographed failed component, and submitted part order request for replacement high pressure switch with estimated 2-hour installation time upon arrival.
Responded to no-cool complaint on 10-year-old system with inadequate airflow and reduced cooling capacity. Upon inspection, discovered severely corroded evaporator coil with significant oxidation and patina buildup on copper tubing, indicating advanced age and moisture exposure. System was operational but performing below acceptable standards due to compromised heat transfer efficiency from coil degradation. Evaporator coil replacement required to restore proper cooling performance; unit currently providing minimal cooling until replacement can be completed.
Completed annual Platinum Level maintenance on a single-zone residential HVAC system with a Lennox air handler located in the attic space. Performed comprehensive inspection of the unit, which was originally installed in April 2026, including filter replacement with 16x25x5 media filter, visual inspection of ductwork connections, and verification of all system components. This was the first scheduled maintenance visit under the annual service agreement. System is operating within normal parameters with no deficiencies noted at this time.
Completed annual Platinum Level maintenance on a single-system HVAC unit with a CFI filter measuring 16x25 inches. Inspected and verified proper airflow direction on the installed air filter, confirmed secure mounting within the metal frame housing, and checked system levelness using precision measuring tools. All components operating within normal parameters with no issues identified during this first annual visit.
Responded to service call for cooling and humidity issues on 15-year-old zoned HVAC system. Performed diagnostic evaluation of outdoor condenser unit and indoor air handler to identify cause of inadequate cooling performance. Documented equipment condition with photos and assessed system operation to determine necessary repairs for restoring proper cooling and humidity control functionality.
Responded to non-urgent service call for 16-year-old HVAC system with thermostat concerns. Upon arrival, verified system was operational with thermostat set at 72°F and room temperature matching at 72°F, confirming proper airflow through vents with no ice buildup present. Performed diagnostic testing using thermostat analyzer to verify proper thermostat operation and system communication, documenting readings for service records.
Completed monthly planned maintenance on a 21-year-old residential HVAC system. Inspected outdoor condenser unit and indoor Carrier furnace, replaced 14x20x5 air filter, verified proper operation of all components, and documented equipment condition with photographs.
Completed platinum level monthly maintenance on 8-year-old system with 20x25x5 filter replacement. Inspected ductwork in attic space and verified all connections, seams, and joints for proper airflow distribution. Addressed customer concern regarding reduced airflow to office area by examining supply duct runs and register connections. Performed comprehensive outdoor unit inspection including electrical components, capacitor testing, and internal compartment evaluation. All system components operating within normal parameters following maintenance completion.
Completed annual planned maintenance visit on single-zone residential HVAC system consisting of Schneider brand furnace and Goodman outdoor condensing unit. Performed comprehensive inspection of indoor furnace unit located in utility closet, verified proper operation of all controls and safety devices, inspected PVC venting system for secure connections and proper drainage, and confirmed electrical components functioning correctly. Conducted full maintenance on outdoor Goodman condenser unit including cleaning of coil surfaces, inspection of refrigerant lines and disconnect box, verification of proper airflow through fan grille, and operational testing of compressor and fan motor. Replaced 16x25x1 air filter and documented system performance parameters within normal operating range.
