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
Installed a 40-gallon gas tall water heater in basement utility area with proper copper piping connections and blue expansion tank mounted overhead. All connections secured to existing plumbing infrastructure, unit positioned on concrete floor against brick foundation wall, and installation completed to manufacturer specifications with proper venting to overhead ductwork.
# HVAC Complete System Installation Successfully completed installation of a 1.5-ton, 14.7 SEER air conditioning system paired with a 97% AFUE upflow gas furnace in basement mechanical room. Removed existing equipment and installed new high-efficiency furnace unit with properly sized ductwork and plenum connections. Configured upflow orientation to accommodate basement installation with supply ductwork extending to upper levels through existing ceiling joists. Installed and connected new condensing unit for cooling system, ensuring proper refrigerant line routing and electrical connections. Integrated system controls and thermostat wiring for seamless operation between heating and cooling modes. Verified all ductwork connections were properly sealed and secured to metal plenum, ensuring efficient airflow distribution throughout the residence. Positioned equipment to maintain adequate clearance from existing water heater and utility infrastructure in the confined basement space. Rout
Conducted comprehensive assessment of existing 40-50 gallon gas-fired A.O. Smith ProMax water heater located in basement utility area. Evaluated current venting configuration and provided estimate for installation of new vent pipe system to ensure proper exhaust ventilation and code compliance. Documented equipment condition, existing infrastructure, and utility connections for replacement specifications.
Responded to no-cool complaint on Goodman HVAC system with indoor temperature reading 77°F against 73°F setpoint. Inspected vertical furnace installation in utility closet and outdoor condenser unit positioned in side yard. System was running but failing to achieve adequate cooling capacity. Evaluated ductwork connections and found concerns regarding potential air loss through crawl space as reported. Documented equipment condition showing 10+ year old unit with standard wear patterns typical for age of system.
Completed Platinum Level maintenance on a 2-year-old HVAC system with 16x25x5 filter configuration during the second scheduled visit. Performed comprehensive inspection of attic-mounted equipment including ductwork, PVC drainage lines, and flex duct connections, verifying proper installation and support of all components. All system components were found to be operating within normal parameters and maintenance tasks were completed per manufacturer specifications.
Completed Platinum Level maintenance on a 3-year-old HVAC system as part of the annual second visit. Performed comprehensive inspection of the furnace unit, replaced 20x20x5 filter, checked all electrical connections at the disconnect box, inspected PVC condensate drain lines and ductwork connections, and verified proper system operation. All components found to be functioning within normal parameters with no issues identified.
Completed annual Platinum Level maintenance on a 2-year-old Aprilaire 410 air conditioning system as requested. Performed comprehensive inspection, cleaning, and testing of all system components to ensure optimal performance and efficiency for the cooling season.
Conducted follow-up site visit to basement HVAC system to assess coil pan replacement requirements. Inspected air handler unit and confirmed coil pan deterioration requiring replacement. Documented system model and serial number, photographed damaged pan and unit configuration to determine optimal repair approach—either lift-and-replace method if coil can remain in cabinet, or full coil removal with refrigerant pump-down if extraction necessary. Estimated half-day repair timeline with no additional helper required, and coordinated part ordering for coil pan replacement.
Completed platinum-level planned maintenance on single HVAC system with 16x25x5 filter configuration. Performed comprehensive inspection of air handler unit, control board circuitry, refrigerant lines, condensate drainage system, and electrical connections. All components found operating within manufacturer specifications, with system ready for continued service.
Conducted on-site assessment of residential cooling system damaged by fallen tree limbs. Evaluated packaged HVAC unit and associated ductwork/plenum for structural damage, operational integrity, and replacement requirements. Documented equipment condition showing weathering, surface oxidation, and impact damage to exterior components. Provided comprehensive replacement quote for complete system installation on existing concrete pad with necessary electrical and refrigerant line connections.
Completed annual Platinum Level maintenance on a single-system residential HVAC unit. Performed comprehensive system inspection, verified thermostat connectivity and proper Wi-Fi communication with network, confirmed all system settings and software version 4.40.0413 operating correctly. Documented system information including model and serial numbers, replaced 20x20x5 air filter, and verified all mechanical and electrical components functioning within manufacturer specifications.
Completed installation of a 3-ton, 19 SEER Lennox heat pump system including outdoor condensing unit and indoor air handler. The air handler was installed vertically in an interior mechanical closet with proper PVC condensate drainage, supply/return ductwork connections, and all manufacturer safety labels intact. The outdoor heat pump unit was positioned in the residential yard with adequate clearance for airflow and service access, with all technical specifications, refrigerant warnings, and coil maintenance notices properly displayed per manufacturer requirements.
Responded to no cooling call on 5-year-old system with thermostat displaying "no signal" error and complete system shutdown. Upon arrival, diagnosed communication failure between thermostat and HVAC unit, traced wiring issue, and restored proper signal connection. System tested successfully with full cooling operation confirmed and thermostat communication re-established.
Completed routine air conditioning tune-up on a three-year-old Lennox system originally installed by our company. Performed comprehensive maintenance inspection of the AC unit, furnace, and associated mechanical equipment located in the residential utility closet. All system components were found to be operating within normal parameters, with no deficiencies noted during the inspection. Unit continues to perform as expected with proper airflow and refrigerant levels maintained.
Responded to no cooling complaint on 5-year-old residential central air conditioning system. Upon arrival, found indoor fan operational but unit blowing warm air with thermostat not set to cooling mode. Performed diagnostic testing on outdoor condenser unit using electrical testing equipment to assess compressor and electrical components. Identified system malfunction preventing proper cooling operation and completed necessary repairs to restore functionality.
Completed follow-up repair on leaking refrigerant line joint on 10-year-old residential air conditioning system. Repaired corroded copper pipe connection that showed significant oxidation and patina formation on outdoor condensing unit. System restored to proper operation with adequate airflow confirmed at supply registers and refrigerant circuit integrity verified.
Completed planned maintenance visit on residential HVAC system with 12x24x1 filter specification in its fifth year of service. Performed comprehensive inspection of outdoor condensing unit and indoor air handler, accessing internal components to verify proper operation of capacitor, wiring connections, and blower motor assembly. Documented system condition with photography showing condenser coils, electrical connections, control board, and heat exchanger sections for maintenance records.
Completed annual Platinum Level maintenance on upstairs Lennox HVAC system with 16x25x5 filter. Inspected furnace/air handler unit, ECM blower motor control board, and all electrical connections. Verified proper operation of 24VAC control system, humidifier accessory terminals, and condensate drainage lines. All components found operating within manufacturer specifications, system performing as designed.
Completed scheduled Gold Level maintenance on 9-year-old residential HVAC system during second preventive visit. Performed comprehensive inspection of outdoor condenser unit, verified operational status, replaced 20X25X5 air filter, and documented equipment condition with photos showing unit in standard working order with no visible damage or immediate concerns.
# HVAC Maintenance Completed Performed Platinum Level preventive maintenance on single residential HVAC system during first scheduled visit. Inspected outdoor condensing unit, verifying proper leveling and operational integrity of electrical components and control board. Documented condition of exterior electrical panel, noting significant rust and corrosion on interior surfaces requiring monitoring. Verified all wire connections and internal circuitry functioning within normal parameters. System operational and ready for continued service with 20x20x5 filter specification noted for homeowner reference.
