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 heat call with system completely non-operational and no airflow present. Upon inspection, discovered significant environmental debris accumulation including leaves and organic matter in bottom of cabinet, along with corroded copper piping and deteriorated components. Blower motor assembly showed heavy dust buildup and compromised electrical connections with multiple wire terminals affected by contamination. Cleaned debris from cabinet base, restored proper blower motor operation, secured all electrical connections, and verified system functionality with normal airflow restored.
Completed comprehensive HVAC system replacement estimate at residential property. Assessed existing heating and cooling infrastructure, including air distribution system with return air vents and electrical service capacity at main panel. Evaluated home's current HVAC configuration, documented system accessibility points, and provided homeowner with energy-efficient replacement options during consultation meeting.
Completed HVAC system replacement estimate for large residential property exceeding 2,200 square feet with cooling system located in basement. Assessed existing aging air handler unit and ductwork configuration in basement utility area, documenting current equipment condition and installation layout. Evaluated exterior condensing unit location and necessary electrical and refrigerant line routing. Provided comprehensive replacement proposal for complete system upgrade prior to peak cooling season to prevent failure during high-demand period.
Responded to no cooling complaint on 10-15 year old central air conditioning system. Upon arrival, performed diagnostic testing on outdoor condensing unit using multimeter to check electrical components including dual capacitors and compressor motor. Disassembled exterior panels to access internal components and inspect condenser coil, which showed significant dust and debris accumulation. Evaluated wire connections, refrigerant lines, and fan motor assembly for proper operation. Unit displayed signs of age-related wear and required cleaning of heavily soiled base pan and internal components to restore proper airflow and system efficiency.
Completed Gold Level planned maintenance on 5-year-old HVAC system. Performed comprehensive inspection of air handler unit, including electrical connections, control board functionality, and internal wiring harness. Verified all wire terminations secure at control board and throughout electrical compartment. Inspected ventilation components and access panels for proper operation. Replaced 20x20x5 air filter as part of routine maintenance protocol. All systems tested and operating within normal parameters upon completion.
Completed Platinum Level planned maintenance on residential cooling system. Installed new 16x25x2 polarized filter as part of second renewal cycle. System inspected and serviced per manufacturer specifications with all components operating within normal parameters.
Completed annual platinum-level preventive maintenance on a 2-year-old Carrier air conditioning system as part of the first scheduled visit. Performed comprehensive inspection of the outdoor condenser unit, replaced 16x25x5 air filter, verified electrical connections at disconnect box, checked refrigerant levels, cleaned condenser coils, and tested system operation to ensure optimal performance for the cooling season.
# Dual Water Heater System Installation Completed professional installation of dual State brand residential water heaters in dedicated mechanical room. Configured units in parallel arrangement to provide increased hot water capacity and redundancy for the residence. Installed comprehensive copper and black iron piping manifold system connecting both water heaters with proper isolation valves for independent service capability. Mounted multiple expansion tanks along horizontal pipe runs to accommodate thermal expansion and maintain system pressure stability. Integrated red-handled circulator pump in central piping network to facilitate efficient water distribution between units. Routed silver galvanized exhaust ductwork from each unit with proper elbow configurations for code-compliant venting. Connected all water supply lines using brass fittings and shut-off valves at strategic locations throughout the system. Installed ceiling-mounted support brackets and hangers to secure all pi
Conducted comprehensive HVAC system evaluation for residential property experiencing cooling inadequacy during extreme temperatures and compressor slamming issues. Existing 15+ year-old air conditioning unit showing signs of refrigerant freeze-up during peak demand periods, with outdoor condenser exhibiting environmental wear and reduced efficiency. Provided complete system replacement estimate including new high-efficiency cooling equipment and compatible furnace options to address capacity limitations and reliability concerns.
Responded to callback for two newly installed Lennox systems experiencing cooling issues due to suspected refrigerant leaks. Connected Fieldpiece SMAN manifold gauge to both units and verified R454B refrigerant pressures and subcooling levels. Referenced manufacturer installation manual to confirm proper indoor unit match-ups and factory-specified subcooling charge requirements for TXV systems with 15-foot line sets. Systems currently operational for heating mode but require refrigerant leak diagnosis and repair to restore cooling functionality.
Completed installation of a 2-ton, 18 SEER Lennox cooling system with a 97% AFUE upflow furnace in the basement mechanical room. Installed outdoor condenser unit on concrete pad with proper electrical disconnect and refrigerant line connections, along with PVC intake and exhaust venting for high-efficiency furnace operation, ensuring all components meet manufacturer specifications and local code requirements.
Conducted comprehensive HVAC replacement estimate for non-operational aging system. Documented existing thermostat wiring configuration showing heat pump setup with multiple wire connections to terminal block. Identified critical safety concern with main electrical panel exhibiting extensive burn marks, heat damage, and charred discoloration around multiple circuit breakers, indicating previous electrical overheating or arcing events. Provided homeowner with detailed replacement options and recommendations addressing both failed HVAC system and electrical panel safety hazards requiring immediate attention.
Conducted comprehensive site evaluation for complete HVAC system replacement on 20-year-old residential air conditioning unit and furnace. Assessed outdoor condenser unit condition, electrical connections, refrigerant line configuration, and internal component wear to provide accurate replacement estimate and system sizing recommendations. Documented existing equipment specifications and discussed multiple system options with customer to meet their heating and cooling needs.
Completed Platinum Level monthly maintenance on a 2-year-old HVAC system. Replaced 16x20x1 air filter and performed comprehensive system diagnostics. Recorded supply air temperature at 47.2°F and return air temperature at 40.0°F, confirming proper cooling operation and adequate temperature differential across the system. All components operating within normal parameters with no deficiencies noted.
Responded to service call for non-functional thermostat on 20-year-old York air conditioning system with Whirlpool furnace. Replaced failed thermostat with basic non-programmable unit per homeowner request. Verified proper system operation and thermostat communication with HVAC equipment following installation. System restored to normal functionality with heating and cooling capabilities confirmed operational.
Completed comprehensive Platinum Level maintenance on 2-year-old HVAC system during second annual visit. Performed full system inspection including electrical component verification, capacitor testing, and airflow measurements at supply registers. Changed 16x25x5 filter, inspected condenser unit with access panel removal to verify wire connections and component integrity, and documented system performance with diagnostic readings. All components operating within manufacturer specifications; customer due for maintenance plan renewal.
Completed comprehensive HVAC replacement estimate for non-functional residential heating system. Assessed existing furnace unit located in basement utility room, documented current equipment specifications, evaluated electrical panel capacity and circuit availability, and photographed existing installation including furnace, water heater proximity, venting configuration, and available workspace. Provided homeowner with complete system replacement options and recommendations based on equipment age, condition, and household heating requirements.
Responded to no cooling call on 6-year-old residential air conditioning system. Upon arrival, found unit completely inoperative with no airflow at supply vents. Homeowner had tripped breaker due to system failure. Performed diagnostic evaluation of outdoor condenser unit and electrical components. Inspected condenser coils, refrigerant lines, compressor operation, and electrical connections at disconnect box. Documented system conditions with photographic evidence showing condenser unit positioning, coil assembly, and overall equipment status for warranty and service records.
Completed annual Gold Level planned maintenance on 11-year-old residential HVAC system. Performed comprehensive inspection of outdoor condensing unit, documenting condition of compressor, refrigerant lines, electrical components, and condenser coil. Noted visible weathering consistent with system age, including surface oxidation on copper refrigerant piping and rust accumulation on unit base. Verified electrical connections and capacitor condition in lower compartment. System operational at time of service.
Completed comprehensive HVAC system replacement estimate for residential property with work areas located in unfinished attic space and interior room with block wall construction. Assessed existing conditions, documented installation requirements including structural considerations for equipment placement, evaluated ductwork routing through exposed ceiling joists and framing, and provided recommendations for complete system replacement to improve energy efficiency and comfort levels throughout the home.
