Princeton Service Overview
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Serving Princeton & 47670: A+ Derr Heating and Cooling provides plumbing, air conditioning, heating, and electrical service throughout Princeton.
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Established Housing: Much of Princeton’s housing dates from the 1960s through the 1980s.
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Four Distinct Seasons: Princeton homeowners’ HVAC needs change throughout the year as the seasons change.
Historic downtown Princeton and the Princeton Theatre & Community Center are familiar parts of the 47670 area, surrounded by residential areas where much of the housing dates from the 1960s through the 1980s. Princeton also moves through four distinct seasons, so what homeowners need from their HVAC systems changes quite a bit over the course of a year. A+ Derr Heating and Cooling provides plumbing, air conditioning, heating, and electrical service throughout Princeton. Call (812) 200-0727 to schedule service for your home.
“Michael was friendly and answered all my questions, when completing my 6 month service. He did an outstanding job and highly recommend APlus Derr!”
— James B
Home Service From Historic Downtown to the Rest of Princeton
You get a good sense of Princeton’s history around downtown, but that is only one part of the community. Lyles Station Historic School & Museum is another recognizable local site, while the Gibson County Fairgrounds gives the 47670 area a gathering place generations of local families know.
The homes themselves have histories too. A large concentration dates from the 1960s, 1970s, and 1980s, but we never assume the equipment inside is the same age as the house. Plenty can change over several decades. When we come through the door, we want to know what system you have now, what it is doing, and what you have noticed.
Getting Princeton Plumbing Problems Under Control
A plumbing problem can change your plans for the day pretty quickly. A toilet that will not work correctly, a drain that keeps giving you trouble, or a water heater problem needs to be traced back to what is actually causing it. We see that same basic reality whether the call takes us closer to historic downtown or farther out into the residential parts of the 47670 area.
Princeton homeowners call for plumbing help with problems such as:
- Drains that keep slowing down or backing up
- Toilets that are not working correctly
- Water heaters that need attention
- Tankless water heater problems
- Sump pumps that need service
- Garbage disposals that stop working
- Sewer or drain concerns
- Piping that needs repair or replacement
- Plumbing components that need installation
- Water filtration needs
A+ Derr provides plumbing repair, installation, and maintenance along with water heaters, tankless systems, sump pumps, sewer and drain service, garbage disposals, toilets, piping and repiping, and water filtration. Much of Princeton’s housing has been standing for several decades, but that does not tell us what plumbing work has already been done. We follow the problem to its source and talk with you about what it will take to fix it.
Request Plumbing Service! Call A+ Derr at (812) 200-0727
Keeping Princeton Homes Cool Through the Warmer Season
Four distinct seasons mean Princeton homeowners eventually reach that point when the heat gets turned off and the AC goes back to work. If the air conditioner has a problem once you are depending on it every day, you usually want an answer sooner rather than later.
Your cooling equipment may need attention when:
- The AC runs without getting the house comfortable
- Cooling suddenly stops
- The system needs repair
- A heat pump is not cooling properly
- Ductless equipment develops a problem
- The AC is due for maintenance
- Existing equipment needs replacement
- You need a new cooling system installed
- Indoor air quality needs attention
- A cooling failure requires emergency service
A+ Derr provides AC repair, installation, and maintenance along with ductless mini-splits, heat pumps, heat pump repair and maintenance, indoor air quality services, and emergency cooling. The Princeton Theatre & Community Center is a familiar part of the historic side of town, but our AC calls can take us into homes throughout the 47670 area. Wherever you are in Princeton, the important question is why your house is not getting comfortable and what we can do about it.
Need AC Service in Princeton? Call (812) 200-0727 to schedule service.
Solving Princeton Home Issues
Problem: A plumbing problem can change your plans for the day pretty quickly.
Solution: A+ Derr provides plumbing repair, installation, and maintenance along with water heaters, tankless systems, sump pumps, sewer and drain service, garbage disposals, toilets, piping and repiping, and water filtration.
Problem: If the air conditioner has a problem once you are depending on it every day, you usually want an answer sooner rather than later.
Solution: A+ Derr provides AC repair, installation, and maintenance along with ductless mini-splits, heat pumps, heat pump repair and maintenance, indoor air quality services, and emergency cooling.
Problem: Much of Princeton’s local housing dates from the 1960s through the 1980s, but decades of repairs and improvements may separate what we find today from what was originally installed.
Solution: A+ Derr provides electrical repair and installation, generators, lighting services, surge protection, panel and meter upgrades, circuit and outlet services, EV chargers, electrical service upgrades, and commercial lighting.
Problem: Furnaces, boilers, heat pumps, and ductless systems come back into regular use as Princeton moves into colder weather.
Solution: A+ Derr provides heating repair, installation, replacement, and maintenance. We also service furnaces, boilers, heat pumps, ductless mini-splits, geothermal systems, and indoor air quality equipment.
Heating Help When Princeton Turns Colder
The seasonal change eventually goes the other direction. Furnaces, boilers, heat pumps, and ductless systems come back into regular use as Princeton moves into colder weather. That makes fall a good time to pay attention to a heating system that is not starting, is not keeping the house comfortable, or is due for maintenance.
We can help when:
- A furnace will not heat the house
- Heating equipment needs repair
- The system needs seasonal maintenance
- A boiler needs attention
- A heat pump is not heating correctly
- Ductless heating develops a problem
- Existing equipment needs replacement
- A new heating system needs installation
- Indoor air quality needs attention
- A loss of heat requires emergency service
A+ Derr provides heating repair, installation, replacement, and maintenance. We also service furnaces, boilers, heat pumps, ductless mini-splits, geothermal systems, and indoor air quality equipment. As the local calendar and seasons move along, we can help make sure the heating side of your home is ready when you need it.
Schedule Heating Service today! Call A+ Derr at (812) 200-0727 or contact us online today.
“Kevin was very professional, explained everything as he was working on my ac unit. Was on time and had everything fixed, cleaned out and go within 1 hour. Highly recommended.”
— Tena F
Electrical Repairs and Upgrades Across 47670
Princeton’s housing history matters in a different way when we talk about electrical work. Much of the local housing dates from the 1960s through the 1980s, but decades of repairs and improvements may separate what we find today from what was originally installed. That is why we want to see the existing electrical system before talking about a repair or larger upgrade.
Electrical work may be needed when:
- A circuit or outlet needs repair
- You need additional circuits or outlets
- Lighting needs repair or installation
- You are considering a panel or meter upgrade
- The property needs an electrical service upgrade
- You want to add a generator
- Surge protection is being considered
- You are planning an EV charger installation
A+ Derr provides electrical repair and installation, generators, lighting services, surge protection, panel and meter upgrades, circuit and outlet services, EV chargers, electrical service upgrades, and commercial lighting. If you are planning something new, we look at what the home has now and what the project will require. That gives us a much better starting point than making assumptions simply because the house has been part of Princeton for several decades.
Need an experienced electrician in Princeton? Call (812) 200-0727 to get a clear quote!
One Company for Princeton’s Changing Home-Service Needs
The Gibson County Fairgrounds becomes a center of local activity during the Gibson County Fair, with rides, food, fireworks, truck and tractor pulls, and other events. Spring Street Market adds another familiar event to Princeton’s calendar. Those are the kinds of local traditions that make the 47670 area feel like home to the people who live here.
Inside the house, what needs your attention can easily change. A plumbing repair may be the priority today, followed months later by AC maintenance, a heating problem, or an electrical project. A+ Derr works across all four service categories, so you have one company to call as those needs change.
We also provide emergency heating and cooling when losing comfort cannot wait for a routine appointment. Our technicians focus on finding the problem, explaining it in terms you can understand, and helping you decide what comes next.
“The tech showed up and was very thorough with everything. He did a great job. Will call again if I ever have any issues.”
— Tina J
When Your Princeton Home Needs Service
When your Princeton home has a plumbing issue, cooling problem, heating failure, or electrical need, A+ Derr Heating and Cooling can help. We provide dependable service throughout 47670, including homes near historic downtown and neighborhoods across the surrounding community. Our team works with you to identify the problem and recommend the right solution for your home. Call (812) 200-0727 or contact us online to arrange service in Princeton.
FAQs for Homeowners in Princeton, IN
What plumbing services does A+ Derr provide in Princeton?
A+ Derr provides plumbing repair, installation, and maintenance along with water heaters, tankless systems, sump pumps, sewer and drain service, garbage disposals, toilets, piping and repiping, and water filtration.
What cooling services does A+ Derr provide in Princeton?
A+ Derr provides AC repair, installation, and maintenance along with ductless mini-splits, heat pumps, heat pump repair and maintenance, indoor air quality services, and emergency cooling.
What heating services does A+ Derr provide in Princeton?
A+ Derr provides heating repair, installation, replacement, and maintenance. We also service furnaces, boilers, heat pumps, ductless mini-splits, geothermal systems, and indoor air quality equipment.
What electrical services does A+ Derr provide in Princeton?
A+ Derr provides electrical repair and installation, generators, lighting services, surge protection, panel and meter upgrades, circuit and outlet services, EV chargers, electrical service upgrades, and commercial lighting.
Page Updated on September 22, 2026
Recent Jobs and Reviews in Princeton, IN
Princeton, IN at a glance
A+ Derr Heating & Cooling has completed 20 jobs in Princeton, IN between December 2025 and January 2026.
The most recent job was on January 30, 2026.
A+ Derr Heating & Cooling has completed 123 jobs in Princeton, IN in the last 12 months.
Job Locations and Reviews
Performed Gold Level maintenance service on 5-year-old residential HVAC system. Inspected Honeywell thermostat operation and verified temperature readings. Examined outdoor condenser unit, which was properly mounted on concrete pad with adequate clearance, despite snow conditions. Replaced air filter as part of annual maintenance protocol.
Completed annual maintenance on NSSU system installed 7/16/25. Performed level check on equipment and verified supply air temperature reading 72°F. Replaced 20x20x5 filters during this first visit of the maintenance cycle. System operating within normal parameters.
Performed annual Gold Level maintenance on 7-year-old HVAC system. Conducted voltage testing with PUL550 meter showing 35.0V reading at control board. Inspected circuit board components and verified proper wire connections to terminals. Replaced 16x25x1 air filter as part of scheduled maintenance protocol.
Responded to a no-heat call for a 2-year-old system with homeowner reporting zero airflow and indoor temperature of 60°F. Inspection revealed accumulated debris in the unit affecting electrical components. Performed thorough cleaning of system interior and reconnected loose wiring connections found between control board and blower motor. After repair, system restored to proper operation with normal heating function and airflow.
Completed Platinum Level maintenance service on a 2-year-old HVAC system. Replaced 16x25x4 pure air filter and verified proper operation of the Honeywell Home smart thermostat, which was functioning correctly in heat mode at 68°F. This was the first maintenance visit for this system.
Responded to customer complaint of buzzing noise during system operation on 4-year-old HVAC unit. Upon inspection, identified the source as the blower motor assembly. Visual examination revealed no obvious mechanical defects in the motor housing or mounting. Recommended continued monitoring and scheduling follow-up maintenance if noise persists or intensifies.
Completed annual Platinum Level maintenance service on a 7-year-old HVAC system. Inspected and replaced 20x20x5 polarized filter according to manufacturer specifications. Verified proper thermostat operation (Honeywell Home ProSeries), confirming system maintains accurate temperature control at 70°F. This was the first visit of the scheduled maintenance program.
Diagnosed issue with 5-year-old zoned HVAC system displaying intermittent heating functionality. Identified and corrected imbalance in multi-zone distribution system, ensuring proper airflow to all areas. System now operating within manufacturer specifications with consistent temperature control throughout the home.
Responded to service call for a 1-year-old electric heating system not responding to heat commands. Diagnosed thermostat malfunction causing incorrect temperature readings and failure to initiate heating cycle. Replaced defective thermostat and verified proper system operation with successful heat call response.
Responded to customer report of constant propane leak in boiler system located in basement utility room. Performed comprehensive gas leak detection on 15-20 year old propane boiler system with multiple connected components. Successfully identified and repaired gas leak source, ensuring system safety and proper operation before restoring service.
Performed follow-up service to complete previously unfinished work, primarily focused on reattaching disconnected ductwork in the crawl space area. Inspection confirmed proper reconnection and secure fitting of all ductwork components to ensure optimal system performance.
Conducted follow-up inspection of exterior lighting at commercial property. Verified proper functioning of entry door illumination and wall-mounted LED floodlight. All lighting fixtures operating as expected with appropriate coverage of entrance and building perimeter.
Performed comprehensive duct cleaning service in a confined space, accessing areas with deteriorated building materials and aging infrastructure. Successfully addressed dust accumulation and debris in the ductwork system, focusing particularly on areas where wooden structural elements interface with mechanical components. Documented pre/post service conditions with photographs to verify effective removal of contaminants.
Conducted diagnostic assessment on 7-month-old mini split system that was reported to run continuously without cycling off when reaching set temperature. System was overheating spaces significantly above setpoint (running at 71°F despite 65°F setting). Inspected unit mounted on interior wall in renovation area and verified temperature differential. Adjusted controller parameters and recalibrated thermostat to properly respond to ambient temperature readings, resolving the continuous operation issue.
Successfully installed a new YELLOW 3-ton, 15.5 SEER heat pump system with modular air handler. Properly mounted outdoor condenser unit on concrete pad with appropriate electrical and refrigerant line connections, and installed indoor air handler with X-pattern access panel for optimal system performance.
Diagnosed Tempstar furnace located in basement requiring control board replacement. System assessment identified board failure as source of malfunction. Documented model/serial information and captured detailed photos of control board for accurate part ordering. Customer paid in full; furnace will be operational once replacement board is installed during follow-up appointment.
Performed scheduled Platinum Level maintenance service on 6-year-old residential HVAC system. Inspected both indoor furnace unit and outdoor AC condenser; system appears to be in serviceable condition. Replaced 16x25x5 air filter as part of regular maintenance program.
Diagnosed customer complaint of heat pump not operating while auxiliary heat functioning on 9-year-old system. Performed refrigerant level check using 9010A Electronic Charging Scale, which indicated undercharge of 6.03 oz. Added necessary refrigerant to restore proper system operation and confirmed heat pump functioning correctly before departure.
Responded to carbon monoxide alarm activation in recently purchased home with 15-20 year old HVAC system. Conducted comprehensive CO testing using UEI CO meter, detecting elevated levels (32 ppm) at HVAC register. After thorough system inspection and ventilation, CO levels decreased to safe readings (2 ppm). Identified and repaired furnace ventilation leak causing carbon monoxide intrusion.
Conducted estimate for replacement of aging furnace system in basement utility area. Current installation includes older olive green furnace unit with galvanized metal ductwork connecting to ceiling distribution system. Recommended upgrading to higher efficiency equipment while utilizing existing duct infrastructure where possible.
