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 January 2026 and March 2026.
The most recent job was on March 6, 2026.
A+ Derr Heating & Cooling has completed 123 jobs in Princeton, IN in the last 12 months.
Job Locations and Reviews
Performed inspection of shower plumbing leak reported in crawl space. Identified severely corroded galvanized pipe with significant rust damage at connection point to PVC. Documented evidence of water intrusion through wooden structural elements for real estate disclosure purposes.
Performed annual planned maintenance on HVAC system installed 7/31/25. Inspected thermostat low voltage connections and verified proper wire terminations. Temperature readings confirmed system operating at 78°F with all components functioning within normal parameters.
Successfully installed a Navien NPE-180A tankless water heater on a wooden wall with proper ventilation through PVC and metallic ducting. Installation included connecting copper, PVC, and drainage pipes to the unit and integrating it with an existing blue water filtration system in the utility room.
Completed first annual maintenance visit on Gold Level service plan for an 8-year-old HVAC system. Inspected electrical connections in control panel, checked wiring integrity, and examined blower motor assembly. Replaced 16x20x1 air filter and documented system condition with photos of internal components for service records. Next scheduled maintenance due 9/2025.
Responded to service call for a 5-year-old heat pump system that was reported to be shaking violently and producing excessive noise during operation. Upon inspection, found the outdoor condenser unit had accumulated debris in the fan assembly. Shut down the heat pump, cleaned the fan components, and verified proper operation after service. Customer had been relying on auxiliary heat strips while the heat pump was disabled.
Responded to service call for Lennox system displaying "Urgent service message" on thermostat. Diagnostic inspection revealed Indoor Fan Motor Failure alerts recorded on January 8, 2024, and December 31, 2023, though system was currently operating normally. Inspected and replaced air filter which showed signs of extended use, cleared error codes from thermostat, and verified proper system operation before concluding service.
Successfully completed installation of a complete GREEN 3-ton 17 SEER/9.7 HSPF two-stage HVAC system with both heating and cooling capabilities. Performed electronic circuit board connections and conducted pressure testing with dual port manometer, confirming proper system operation with readings at 004/100.
Successfully installed a comprehensive whole-house water filtration system consisting of dual black cylindrical filter housings with white bracket supports securely mounted to the wall structure. Connected the system to existing copper plumbing infrastructure using brass fittings and valves, ensuring proper integration with the home's water supply network including PEX connections where appropriate.
Responded to follow-up service call regarding temperature regulation issues reported after previous maintenance visit. Upon inspection, found Honeywell Home ProSeries thermostat functioning properly, displaying 73°F while set to 67°F in Heat mode. Verified system operation and confirmed thermostat is now properly maintaining desired temperature parameters.
Performed gold level annual maintenance on 1 HVAC system. Discovered significant dust accumulation on blower wheel assembly affecting system efficiency; thoroughly cleaned blower components to restore proper airflow and operation. System is showing signs of age with minor rust development on housing components.
Performed annual planned maintenance on HVAC system installed in November 2025. Conducted electrical diagnostics with multimeter, confirming proper voltage readings of 24.56V at control board. Inspected blower assembly, fan motor, and ductwork connections. System is operating within normal parameters with all safety systems functioning correctly.
Completed Gold Level maintenance on 5-year-old HVAC system. Inspected internal components including electrical wiring, gas valve assembly, circuit boards, and blower motor; cleaned system interior and verified proper operation. Replaced 16x25x5 filter and documented system condition with photos for future reference.
Responded to water leak report in utility room from a 6-year-old HVAC system. Upon inspection, identified a broken pipe on the furnace that had caused significant water release but had mostly stopped leaking at time of arrival. Documented the condition of the drainage pan showing sediment buildup and assessed potential water damage to the surrounding plywood flooring.
Performed annual Gold Level maintenance on 20-year-old Kenmore HVAC system. Inspected electrical connections and wiring (red, green, black, yellow, orange, and purple) for proper functionality. Replaced 16x24x1 filter and verified system operation; unit is functioning adequately despite age.
Completed assessment for replacement of aging exterior HVAC condenser unit. Documented current installation on gravel bed adjacent to structure with green siding, noting electrical connections and surrounding conditions. Turned quote over to management for customer consideration.
Diagnosed and repaired water heater system that was failing to provide adequate hot water throughout residence. Discovered significant sediment buildup in tank and malfunctioning dip tube, which were preventing proper heating and distribution. Performed complete flush of system, replaced dip tube and expansion tank, and verified proper operation with consistent hot water delivery to all fixtures.
Conducted on-site assessment for installation of water filtration or water softener system. Inspected existing water heater setup and surrounding utility area, documenting current plumbing configuration including copper and PVC lines with shutoff valves. Provided customer with comprehensive options for water treatment solutions based on observed installation environment.
Completed Platinum Level maintenance on 3-year-old HVAC system, which included replacing 16x25x5 filter and performing comprehensive system inspection. Verified proper operation of Lennox thermostat and confirmed heating functionality. Outdoor unit was properly protected with weatherproof cover as part of seasonal maintenance protocol.
Performed scheduled second visit of Gold Level maintenance on 1-year-old Lennox HVAC system. Inspected furnace unit in basement utility area, changed 20x20x5 air filter, and verified proper operation of all components. System functioning within normal parameters; customer advised of upcoming renewal.
Completed monthly maintenance on a gold-level single system home with a 9-year-old AC unit and 29-year-old Carrier WeatherMaker Infinity furnace. Replaced 16x25x1 filter, inspected thermostat functionality, and verified proper operation of all system components.
