Jefferson HVAC Contractor
Local Heating, Ventilation & Air Conditioning Solutions
Carew Heating & AC provides professional HVAC services in Jefferson, WI for homes and businesses throughout Jefferson County. Our licensed and insured technicians handle heating repair, air conditioning service, system replacement, installation and routine HVAC maintenance. Since 1996, we have delivered dependable comfort solutions designed to improve system efficiency, performance and long-term reliability.
24-Hour Emergency HVAC Repair in Jefferson
Call (920) 626-3962 for emergency HVAC repair in Jefferson. We provide 24/7 HVAC services for urgent heating and cooling problems, including emergency furnace repair, boiler repair, AC repair and heat pump service for residential and commercial properties in Jefferson. Contact our technicians anytime for fast assistance restoring comfort and preventing further HVAC system damage.
Emergency HVAC services address equipment failures and comfort issues. For fires, gas leaks or medical emergencies, call 911 immediately.
- Ashippun
- Beaver Dam
- Burnett
- Cambridge
- Clyman
- Columbus
- Cottage Grove
- Deerfield
- Delafield
- Dousman
- Eagle
- Edgerton
- Fall River
- Fort Atkinson
- Fox Lake
- Friesland
- Genesee Depot
- Hartford
- Hartland
- Helenville
- Horicon
- Hubertus
- Hustisford
- Iron Ridge
- Ixonia
- Jefferson
- Johnson Creek
- Juneau
- Lake Mills
- Lebanon
- Lowell
- Marshall
- Mayville
- Merton
- Nashotah
- Neosho
- North Lake
- North Prairie
- Oakfield
- Oconomowoc
- Okauchee
- Palmyra
- Randolph
- Reeseville
- Rio
- Rubicon
- Sullivan
- Sun Prairie
- Waterloo
- Watertown
- Waukesha
- Waupun
- Whitewater
- Woodland
HVAC Repair, Replacement & Installation Services in Jefferson
Our Jefferson HVAC technicians provide complete heating and cooling services designed to keep your property comfortable throughout every season. Whether you need fast HVAC repairs, preventative maintenance or full system replacement, Carew Heating & AC delivers professional solutions backed by decades of industry experience. We service furnaces, boilers, air conditioners, ductless mini-splits and heat pump systems throughout Jefferson and surrounding communities.
Heating Services
Cold Wisconsin winters require reliable heating equipment for consistent indoor comfort. Our Jefferson heating services focus on safe operation, efficient performance and dependable warmth throughout the heating season.
- Furnace Replacement: Install modern high-efficiency furnace systems designed to deliver reliable heating and improved energy performance.
- Furnace Repair: Diagnose ignition problems, airflow restrictions, thermostat issues and furnace system failures.
- Furnace Maintenance: Preventative furnace tune-ups to clean components, inspect safety controls and optimize efficiency.
- Heater Replacement: Professional installation of heating systems properly sized for dependable indoor comfort.
- Heater Repair: Troubleshoot electrical faults, mechanical problems and uneven heating performance.
- Heater Maintenance: Routine service designed to extend equipment lifespan and maintain heating reliability.
- Boiler Replacement: Upgrade aging boiler systems with modern hydronic heating equipment for consistent warmth.
- Boiler Repair: Resolve leaks, pressure problems and circulation issues affecting boiler performance.
- Boiler Maintenance: Scheduled service to keep boiler systems operating efficiently and reliably.
- Oil Furnace Maintenance: Specialized maintenance service for oil furnace systems to maintain safe and efficient heating.
Air Conditioning Services
Warm summer weather in Wisconsin makes dependable cooling systems essential. Our Jefferson AC services help maintain consistent indoor temperatures while improving air conditioning efficiency.
- AC Repair: Diagnose refrigerant leaks, compressor problems, electrical faults and airflow issues affecting cooling performance.
- AC Replacement: Install modern central air conditioning systems designed for efficient and reliable cooling.
- AC Maintenance: Seasonal AC tune-ups to inspect components, clean coils and improve system performance.
- Ductless Mini-Splits: Energy-efficient ductless systems to provide zoned heating and cooling without traditional ductwork.
- Heat Pumps: Installation, repair and maintenance for heat pump systems.
- Thermostats: Install programmable and smart thermostats for improved temperature control and energy efficiency.
Ventilation & Air Quality Services
Indoor comfort also depends on healthy air quality and balanced ventilation. Our Jefferson HVAC team provides airflow improvements and air quality solutions designed to support cleaner indoor environments.
- Duct Cleaning: Remove dust, debris and contaminants from ductwork to improve airflow and indoor air quality.
- Ductwork Services: Repair, sealing and installation of duct systems designed to improve HVAC efficiency.
- High-Efficiency Filters: Advanced filtration systems capture airborne particles, dust and allergens.
- HVAC Zoning: Zoned HVAC systems allow independent temperature control in different areas of your home.
- Humidifiers: Whole-home humidifier systems help maintain balanced humidity during dry winter months.
- Dehumidifiers: Systems designed to reduce excess indoor moisture and improve comfort.
- Radon Mitigation: Radon reduction systems designed to improve indoor air safety.
- Trane Products Installation: Professional installation of high-efficiency Trane heating and cooling equipment.
HVAC Financing in Jefferson, WI
Heating and cooling equipment upgrades can be significant investments. Carew Heating & AC provides HVAC financing in Jefferson through Wells Fargo, making it easier to manage the cost of furnace installation, AC replacement and other HVAC improvements. Our HVAC financing options help homeowners restore comfort quickly while keeping project payments manageable.
Why Choose Carew?
-
Customer-First ServiceClear communication, honest recommendations, and a commitment to doing the job right the first time.
-
Quality You Can FeelHigh-efficiency systems and expert workmanship designed to improve comfort and lower energy costs.
-
Around-the-Clock SupportEmergency HVAC service available 24/7 to keep your home comfortable when it matters most.
-
Trusted Local ExpertsServing Watertown and the surrounding communities with reliable HVAC & Electrical solutions tailored to your home’s needs.
Hear From Our Happy Customers
-
“Great company. The technicians are courteous and efficient. Matt did a great job and explained everything to me.”Kenneth K.
-
“Matt did a great job with my air conditioning cleaning. I recommend signing up for their comfort plan helps keep everything running well and service is on time. Matt does great with tolerance with my dogs; they always want to help.”Dave C.
-
“Matt was very pleasant to work with. He arrived on time and was very professional. He answered all my questions and offered some good advice. Definitely will be using Carew again. Thank you.”Rick E.
-
“Alex did a great job explaining what he was doing and did the tune-up/yearly maint. in a timely manner. And was very nice.”Christian S.
-
“Carew is the best! Our air went out on the hottest day of the year, and they came right away to help us! I am so grateful for their professionalism, quick service, and great prices!!”Jennifer R.
-
“Carew installed a new furnace for me. The installation was quick and efficient. Everything went well, and it's running great.”Michael M.
-
“Carew Heating & AC Inc has been very helpful in sorting my heating and AC needs in my home that I recently purchased. Rob, the Technician was very polite, informative, and thorough.”Peter R.
-
“We had a fantastic experience with Ben and Alex today! They arrived right on time, were incredibly professional, and clearly knew their stuff. It’s not every day you find a team that brings both expertise and a great sense of humor into your home.”Aaron J.
-
“I have been a customer of Carew Heating and Air since we moved to Watertown 5 plus years ago. We are always beyond pleased with our service needs. They are experts. I highly recommend Carew! Thank you!”Lee K.
Reasons To Call a Jefferson HVAC Company
Heating and cooling equipment often shows warning signs before a complete failure occurs. If your system begins running differently, contacting a Jefferson HVAC company early can help prevent costly repairs, improve efficiency and restore reliable comfort inside your home or business.
Heating Issues
- Furnace won’t ignite: Ignitor failure, gas valve problems or thermostat wiring issues may stop the system from starting.
- Furnace blowing lukewarm air: Dirty flame sensors, clogged filters or airflow restrictions may reduce heating output.
- Uneven heating between rooms: Duct leaks, blocked vents or blower motor problems may prevent proper heat distribution.
- Boiler making knocking noises: Mineral buildup or pressure imbalance inside the heat exchanger may affect circulation.
- Radiators not heating evenly: Air trapped in the system or circulation pump issues may limit hot water flow.
- Frequent furnace cycling: Overheating safety switches, thermostat calibration problems or restricted airflow may cause short cycling.
Cooling & AC Issues
- AC unit won’t start: Electrical disconnect problems, failed capacitors or thermostat faults may prevent startup.
- AC running but not cooling: Refrigerant leaks, dirty condenser coils or compressor issues may reduce cooling performance.
- Frozen evaporator coil: Airflow restrictions or refrigerant imbalance may cause ice buildup on the coil.
- AC system running constantly: Poor insulation, thermostat placement or system sizing problems may affect operation.
- Warm air from vents: Reversing valve issues or compressor problems may interrupt cooling cycles.
- Mini split not cooling properly: Sensor errors, clogged filters or refrigerant problems may affect ductless systems.
- AC making buzzing or rattling noises: Fan motor wear, loose parts or electrical issues may require service.
General HVAC Problems
- Poor airflow throughout the home: Dirty filters, blocked ductwork or failing blower motors may restrict circulation.
- Indoor air quality concerns: Dust, allergens or airborne contaminants may circulate through the HVAC system.
- Sudden increase in energy bills: Aging equipment or duct leaks may reduce system efficiency.
- Humidity problems indoors: Ventilation issues or malfunctioning humidifiers or dehumidifiers may affect comfort.
- Thermostat not responding: Wiring problems, sensor errors or programming issues may interrupt system control.
- Strange odors from vents: Mold growth, dust buildup or overheating components may create unpleasant smells.
- Frequent HVAC breakdowns: Repeated service calls may indicate equipment nearing the end of its lifespan.
Do You Need a Permit to Replace an HVAC System in Jefferson?
Yes, you need a permit to replace an HVAC system in Jefferson. The City of Jefferson Building Inspection Department requires a permit for any additions, changes, repairs or alterations, including HVAC system replacement.
HVAC work done without approved permits can bring safety risks, legal penalties, insurance challenges or costly repairs down the road. Our team manages permits and installation for a safe system aligned with code requirements.
For permitting questions and correspondence, contact the City of Jefferson Building Inspection Department:
- 317 South Main St, Jefferson, WI 53549
- (920) 674-7727
The Best Residential HVAC System for Jefferson Homes
Choosing the right HVAC system for a Jefferson home depends on factors like home size, insulation quality and Wisconsin’s seasonal climate. Winters in Jefferson often bring temperatures between the mid-teens and low-20s°F, while summer highs typically reach the upper-70s to low-80s°F with periods of humidity. Many homes in Jefferson average 1,800–2,100 square feet, making properly sized furnaces paired with central air conditioning or modern heat pump systems a strong choice for maintaining year-round comfort. A correctly matched HVAC system helps improve energy efficiency, stabilize indoor temperatures and extend equipment lifespan.
| Climate Factor | Average in Jefferson, WI | HVAC Impact |
|---|---|---|
| Winter Low | 14 - 22°F | Reliable heating systems, such as high-efficiency furnaces, support winter comfort |
| Summer High | 78 - 83°F | Central air conditioning helps maintain steady indoor cooling |
| Average Home Size | ~1,950 sq. ft. | Proper HVAC sizing improves airflow and overall system efficiency |
| Seasonal Humidity | Moderate to High | Whole-home dehumidifiers and enhanced filtration improve comfort and air quality |
If you’re considering a new HVAC system, Carew Heating & AC can evaluate your current equipment, review your home’s heating and cooling needs and recommend the right solution for dependable comfort in Jefferson.
Get Started With a Free HVAC Quote!
