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Carew Heating & AC Carew Heating & AC
Call Us Today! (920) 626-3962
Summit, WI

Summit HVAC Contractor

Local Heating, Ventilation & Air Conditioning Solutions

Carew Heating & AC provides dependable HVAC services in Summit, WI for homes and businesses throughout Waukesha County. Our licensed and insured technicians handle heating repair, air conditioning service, HVAC installation, system replacement and routine maintenance for a wide range of equipment. Since 1996, we have delivered reliable comfort solutions designed to improve system efficiency, performance and long-term HVAC reliability.

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24-Hour Emergency HVAC Repair in Summit

Call (920) 626-3962 for emergency HVAC repair in Summit. 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 Summit. 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.

Proudly Serving Customers in Watertown, WI
  • 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 Summit

Our Summit HVAC technicians provide complete heating and cooling services designed to keep your property comfortable year-round. Whether you need fast HVAC repairs, preventative maintenance or full equipment replacement, Carew Heating & AC delivers professional solutions backed by decades of experience. We service furnaces, boilers, air conditioners, ductless mini-splits and heat pump systems throughout Summit and surrounding communities.

Heating Services

Cold Wisconsin winters require dependable heating equipment for consistent indoor comfort. Our Summit heating services focus on safe operation, efficient performance and reliable warmth throughout the entire heating season.

  • Furnace Replacement: Installation of modern high-efficiency furnace systems designed for reliable heating and improved energy performance.
  • Furnace Repair: Diagnose ignition failures, airflow restrictions, thermostat issues and furnace system breakdowns.
  • Furnace Maintenance: Preventative furnace tune-ups inspect safety controls, clean components and improve heating efficiency.
  • Heater Replacement: Professional installation of heating systems properly sized for dependable indoor comfort.
  • Heater Repair: Troubleshoot electrical issues, mechanical problems and uneven heating concerns.
  • Heater Maintenance: Routine service designed to extend equipment lifespan and maintain reliable operation.
  • Boiler Replacement: Upgrade aging boiler systems with modern hydronic heating equipment for consistent warmth.
  • Boiler Repair: Resolve leaks, pressure issues and circulation problems affecting boiler performance.
  • Boiler Maintenance: Scheduled maintenance designed to maintain boiler efficiency and dependable operation.
  • Oil Furnace Maintenance: Specialized maintenance service for oil furnace systems to maintain safe heating performance.

Air Conditioning Services

Warm Wisconsin summers require reliable cooling equipment to maintain indoor comfort. Our Summit AC services help keep air conditioning systems operating efficiently while delivering consistent cooling performance.

  • AC Repair: Diagnose refrigerant leaks, compressor failures, 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 optimize system performance.
  • Ductless Mini-Splits: Energy-efficient ductless systems that provide zoned heating and cooling without traditional ductwork.
  • Heat Pumps: Installation, repair and maintenance for versatile heat pump systems providing year-round comfort.
  • Thermostats: Install programmable or smart thermostats for precise temperature control and improved efficiency.

Ventilation & Air Quality Services

Indoor comfort also depends on clean air and balanced ventilation. Our Summit HVAC technicians provide ventilation improvements and air quality upgrades designed to support healthier 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 for airborne particles, dust and allergens.
  • HVAC Zoning: Zoned HVAC systems allow independent temperature control throughout different areas of your property.
  • 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 Summit, WI

When heating or cooling systems need replacement, immediate service is often the best option. Carew Heating & AC provides HVAC financing in Summit through Wells Fargo, helping homeowners finance furnace installations, AC replacements and other comfort upgrades with flexible payment options.

HVAC Financing Options

Why Choose Carew?

  • Customer-First Service
    Clear communication, honest recommendations, and a commitment to doing the job right the first time.
  • Quality You Can Feel
    High-efficiency systems and expert workmanship designed to improve comfort and lower energy costs.
  • Around-the-Clock Support
    Emergency HVAC service available 24/7 to keep your home comfortable when it matters most.
  • Trusted Local Experts
    Serving Watertown and the surrounding communities with reliable HVAC & Electrical solutions tailored to your home’s needs.

Hear From Our Happy Customers

    Thank You, Matt & Carew
    “Great company. The technicians are courteous and efficient. Matt did a great job and explained everything to me.”
    Kenneth K.
    Friendly & Fast Service. Highly Recommend This Company
    “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.
    Thank You, Carew!
    “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.
    Excellent Work
    “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.
    We are Grateful for Carew
    “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.
    Couldn't Be Happier
    “Carew installed a new furnace for me. The installation was quick and efficient. Everything went well, and it's running great.”
    Michael M.
    Above & Beyond
    “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.
    10/10 Highly Recommend!
    “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.
    No One Better!
    “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 Summit HVAC Company

Heating and cooling systems rarely fail without warning. If your equipment begins operating differently, contacting a Summit HVAC company early can help restore performance, reduce energy waste and prevent larger system failures.

Heating Issues

  • Furnace not turning on: Ignition system problems, thermostat wiring issues or electrical faults may prevent startup.
  • Furnace blowing cool air: Flame sensor buildup, clogged filters or airflow restrictions may interrupt heating cycles.
  • Uneven heating across rooms: Duct leaks, blocked vents or blower motor wear may reduce heat distribution.
  • Boiler making banging sounds: Sediment buildup or pressure imbalance may disrupt water circulation.
  • Radiators heating slowly: Air trapped in the hydronic system or circulation pump issues may limit heat output.
  • Frequent furnace short cycling: Thermostat calibration problems or overheating components may cause rapid cycling.

Cooling & AC Issues

  • AC system will not start: Tripped breakers, capacitor failure or thermostat faults may prevent operation.
  • AC blowing warm air: Refrigerant leaks, compressor problems or dirty condenser coils may reduce cooling capacity.
  • Frozen evaporator coils: Restricted airflow or refrigerant imbalance may cause ice buildup on the coil.
  • AC running continuously: Improper system sizing, insulation issues or thermostat placement may affect efficiency.
  • Mini split not cooling properly: Sensor errors or clogged filters may impact ductless system performance.
  • AC making loud buzzing or rattling noises: Fan motor wear or loose components may require repair.
  • Weak airflow from vents: Duct blockages or blower motor problems may reduce cooling circulation.

General HVAC Problems

  • Poor airflow throughout the home: Dirty filters, damaged ductwork or failing blower motors may restrict circulation.
  • Indoor air quality concerns: Dust, allergens and airborne contaminants may accumulate without proper filtration.
  • Unexpected increase in utility bills: Aging HVAC equipment or duct leaks may reduce system efficiency.
  • Humidity imbalance indoors: Malfunctioning humidifiers, dehumidifiers or ventilation systems may affect comfort.
  • Thermostat not responding correctly: Wiring faults, sensor issues or programming errors may interrupt system control.
  • Unusual odors from vents: Mold growth, dust buildup or electrical overheating may cause unpleasant smells.
  • Frequent HVAC repairs: Repeated breakdowns may indicate equipment nearing the end of its lifespan.

Do You Need a Permit to Replace an HVAC System in Summit?

Yes, you need a permit to replace an HVAC system in Summit. The Village of Summit Building Inspector requires permits for all residential and commercial HVAC projects.

Moving forward with HVAC work without approved permits can lead to unsafe systems, fines, insurance complications or expensive repairs later. Our knowledgeable team manages permits and installation for a safe HVAC system.

For permitting questions and correspondence, contact the Village of Summit Building Inspector:

  • 37100 Delafield Rd, Summit, WI 53066
  • (262) 490-4141

The Best Residential HVAC System for Summit Homes

The best HVAC system for a Summit home depends on factors such as square footage, insulation quality and local climate conditions. Summit experiences cold winters with temperatures often ranging from the mid-teens to low-20s°F, while summer highs usually reach the upper-70s to low-80s°F with moderate humidity. Homes in the Summit area commonly average 2,000–2,300 square feet, which makes properly sized furnace and central air conditioning systems or modern heat pump systems ideal for maintaining comfortable indoor temperatures throughout the year. A well-matched HVAC system helps improve efficiency, maintain balanced airflow and support long-term equipment performance.

Climate FactorAverage in Summit, WIHVAC Impact
Winter Low14 - 22°FHigh-efficiency furnaces or dual-fuel heat pump systems provide dependable heating
Summer High78 - 83°FCentral air conditioning supports consistent cooling performance
Average Home Size~2,150 sq. ft.Proper HVAC sizing improves airflow and overall efficiency
Seasonal HumidityModerate to HighDehumidifiers and improved filtration help maintain indoor 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 a system designed for reliable comfort in Summit homes.

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