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
Responded to no cooling call on 6-year-old heat pump system with indoor temperature at 79°F and thermostat set to 70°F. Upon arrival, confirmed unit was completely shut down due to frozen outdoor coil as reported by homeowner. Conducted diagnostic testing using refrigerant manifold gauges on R-410A system to assess operating pressures, superheat, and subcool values. Identified system freeze-up condition affecting heat pump operation. Performed necessary repairs and system evaluation to restore proper cooling function to the residential heat pump and air handler unit.
Performed routine maintenance inspection on Generac G00704311 standby generator system rated for 120/240V single-phase operation. Verified generator nameplate data, checked operational status using Evolution 2.0 controller diagnostics, and documented system parameters. Unit tested within normal operating specifications, with next scheduled service interval recorded at 200 hours of runtime.
Completed monthly platinum level maintenance on residential Lennox condenser unit. Performed comprehensive system inspection including cleaning of outdoor coil, verification of refrigerant levels, electrical component testing, and replacement of 16x20x5 air filter. All components operating within manufacturer specifications with no deficiencies noted.
Completed Platinum Level maintenance on residential HVAC system during second annual visit. Serviced outdoor condenser unit and indoor furnace, replaced 16x25x5 air filter, performed system diagnostics with manifold gauges, and verified proper operation of all components. All equipment found operating within manufacturer specifications.
Completed first annual Gold Level maintenance visit for new customer with one HVAC system less than 20 years old. Performed comprehensive inspection of Trane system with digital thermostat set to 72 degrees, documented water heater installation with copper piping and verified all safety labels and specifications, and captured system conditions for service records.
Completed comprehensive replacement estimate for 13-year-old HVAC system with existing functional equipment. Assessed current upflow furnace installation in basement utility area, documented existing ductwork configuration including flexible supply runs, measured plenum and coil dimensions for proper replacement sizing, and evaluated structural components including base condition and clearance requirements. Provided replacement options to former customer with detailed system specifications and installation requirements.
Completed second annual planned maintenance visit on 10-month-old Lennox HVAC system including furnace/air handler and outdoor condensing unit. Performed comprehensive system inspection, replaced CFI filters, verified proper operation of all components, cleaned condenser coils, checked refrigerant levels, tested electrical connections at disconnect box, and confirmed adequate airflow through ductwork. System operating within manufacturer specifications; customer due for service contract renewal.
Completed installation of new PVC drain plumbing system under bathroom vanity, including P-trap assembly and connection to vertical drain line. All components were properly secured to floor joists with appropriate brackets and tested for proper drainage and leak-free operation.
Completed monthly Platinum Level maintenance on a 10-year-old HVAC system. Performed comprehensive inspection of indoor air handler unit and outdoor condensing unit, replaced 20x20x5 air filter, verified electrical connections and wiring integrity, checked refrigerant levels, inspected condensate drain lines and PVC piping, tested system operation and airflow, and documented equipment condition with photographic records. All components operating within normal parameters.
Responded to no cooling complaint on 6-year-old residential HVAC system running continuously but delivering warm air with thermostat set to 72°F and reading 74°F. Performed diagnostic evaluation of indoor air handler unit and associated components. Inspected electrical connections, circuit breakers, and control systems with no tripped breakers identified. Examined refrigerant lines, coil condition, and ductwork connections. Verified airflow through supply vents and confirmed no ice accumulation on evaporator coil or furnace components. Documented system installation configuration including air handler placement, return air plenum, and flexible ductwork routing in utility closet. Assessed overall system operation and identified cooling system malfunction preventing proper temperature control.
# HVAC Complete System Installation Successfully installed a complete 2.5-ton HVAC system featuring a 15.5 SEER air conditioning unit paired with a 97% AFUE high-efficiency gas furnace in the basement utility area. The new furnace was positioned in the existing mechanical space with exposed brick foundation walls, replacing the previous heating equipment. Connected all supply and return ductwork, including metal trunk lines and flexible ducting branches to the new furnace plenum. Installed white PVC condensate drain piping and venting system per manufacturer specifications and local code requirements. Mounted the outdoor condensing unit on a stable pad with proper clearances from the structure and connected refrigerant line set between indoor and outdoor components. Performed vacuum and pressure testing on the refrigerant system to ensure leak-free operation. Charged the system with R454B refrigerant to manufacturer specifications based on ambient conditions and system requirements.
Responded to service callback for HVAC system with inadequate airflow following previous capacitor replacement. Upon arrival, performed comprehensive electrical system inspection and documented main electrical panel and circuit breaker configuration. Verified proper breaker operation for AC circuit, inspected wiring connections, and assessed power supply to HVAC unit to identify root cause of continued fan motor performance issues.
Completed routine AC tune-up on two-year-old air conditioning system. Performed comprehensive maintenance inspection of unit located in utility closet, verified all components operating within normal parameters, and documented system condition with photos. System confirmed to be functioning properly with no issues identified.
Completed annual Gold Level planned maintenance on 10-year-old HVAC system with 16x25x5 filter. Performed comprehensive inspection of furnace unit and associated components in basement utility area, verified proper operation of heating system, checked all electrical connections, inspected ductwork and venting systems including PVC condensate drain, and documented equipment condition with photos. All components found operating within normal parameters.
Completed installation of a 3-ton, 19 SEER Lennox heat pump system at residential property. Indoor air handler unit was installed in utility closet with proper clearances and ductwork connections, while outdoor condenser unit was positioned on concrete pad against exterior wall with appropriate refrigerant line routing and electrical disconnect. All components were secured, tested for proper operation, and system was commissioned per manufacturer specifications.
Completed scheduled HVAC system maintenance on both indoor furnace unit and outdoor condensing unit. Performed comprehensive tune-up including inspection of all electrical components, circuit boards, blower motor assembly, capacitor, and wiring connections. Utilized diagnostic equipment to test system performance and verify proper operation of all components. Both units inspected, cleaned, and confirmed to be functioning within normal parameters.
Responded to gas odor complaint at furnace location following same-day gas meter replacement by utility company. Performed comprehensive leak detection inspection of furnace gas train, including pressure testing of all connections, valves, and piping within the unit's mechanical compartment. Confirmed all gas connections were secure with no detectable leaks present, verified proper system operation, and provided safety clearance for continued use.
Completed Platinum Level planned maintenance on a 5-year-old Amana air conditioning system. Performed comprehensive inspection of the outdoor condensing unit, replaced 16x25x2 air filter, verified electrical connections and components, and confirmed proper system operation. All maintenance tasks were completed according to manufacturer specifications, with the unit operating within normal parameters and no deficiencies noted during this first annual visit.
Completed second annual platinum level maintenance on Bryant condenser unit. Performed comprehensive system inspection including cleaning condenser coils, checking refrigerant levels and pressures, testing electrical components, lubricating moving parts, and replacing 25x25x5 filter. All components operating within manufacturer specifications; customer due for service plan renewal.
Completed HVAC system replacement estimate for a 31-year-old residential unit that has been in service since original home construction. The existing system utilizes R-22 refrigerant, which was phased out of production in 2010, making future service and repairs increasingly difficult and costly. Documented existing gas meter installation and exterior connections, photographed current system configuration including furnace, evaporator coil, and base assembly with detailed measurements for proper replacement sizing. Assessed installation space requirements and clearances, noting return air and plenum-to-ceiling height dimensions to ensure proper fitment of new equipment. Discussed system replacement options with homeowner, who is exploring potential coverage through homeowners insurance. Customer was referred through previous professional connection and will coordinate with family member for final installation scheduling once financing and insurance options are confirmed.
