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Oconomowoc is famous for its beautiful lakes – like Lac La Belle and Fowler Lake – but the area’s weather can swing from humid summers around 82.4°F to icy winters around 10.2°F. Whether your home is near South Cross Street near Downtown Oconomowoc or close to Highway 16, Pat’s Heating & Air Conditioning is here to keep you comfortable in every season.

We’ve spent over 36 years serving Southeastern Wisconsin, and we know exactly how to handle the region’s temperature extremes – from installing brand-new units to providing late-night emergency repairs.

Why Choose Pat’s Heating & Air Conditioning in Oconomowoc?

Oconomowoc is a growing city in Waukesha County, but one thing hasn’t changed: residents want fast, dependable HVAC solutions. That’s precisely what Pat’s delivers:

  • Leading Expertise: With decades of hands-on experience, our technicians know the ins and outs of HVAC systems.
  • Quick Call-Outs: Whether you’re by Woodlands or down near Briarwood, we arrive promptly to solve your problems.
  • 24-Hour Care: We’re ready to tackle emergency issues any time – rain or shine, day or night.
  • Customer Satisfaction Guarantee: We prioritize your happiness and always strive for top-notch service.
  • Flexible Payment Options: We offer payment plans to make sure our services fit your budget.

Oconomowoc Air Conditioning Installation, Repair & Maintenance

Summer days in Oconomowoc can be especially hot, and temperatures sometimes climb above 82°F! When that happens, a reliable Air Conditioning Installation keeps your home cool and fresh – great for when you want to get back to a nice cool house after being out by Fowler Lake. 

Got an existing AC unit? Our repair and maintenance services are available around the clock. We’ll make sure your system runs efficiently so you can relax indoors after a stroll along the Lake Country Trail.

Reliable Ductless HVAC Solutions in Oconomowoc

For homeowners who’d rather skip extensive ductwork, Ductless HVAC Installations deliver zoned heating and cooling exactly where you need it. 

Our technicians can install sleek wall-mounted units in any room, so we don’t take up too much floor space and can cut down on your energy usage. Whether you live in a cozy historic house near Main Street or a modern condo near Pabst Farms, ductless systems are a versatile choice.

VRF Systems for Your Oconomowoc Home

Variable Refrigerant Flow (VRF) systems are an increasingly popular choice around Oconomowoc’s suburban neighborhoods. They switch from heating to cooling without skipping a beat – perfect for Wisconsin’s erratic weather patterns! 

Pat’s expert team will evaluate your home’s layout and recommend the best VRF solution so you can always enjoy a balanced indoor climate.

Comprehensive Heating Solutions Across Oconomowoc

When winter comes knocking, temperatures can dip below freezing, especially if you’re out by Okauchee Lake or near the outskirts of Waukesha County. 

Pat’s is your all-in-one provider for heating services in Oconomowoc, whether you need an urgent repair or a full system overhaul.

24/7 Heating Repairs

If your boiler starts acting up after a day of ice skating on Fowler Lake, don’t stress – our factory-trained pros are just a phone call away. We’ll be there to troubleshoot the issue and make honest recommendations to keep your heating costs manageable.

Boiler & Radiant Heating Installation & Maintenance

A quality boiler or radiant heating system can help you handle those frigid Wisconsin nights. Whether you’re considering an upgrade or just need routine service, we install new units that suit your property and follow up with regular maintenance to keep your system in great shape.

Heat Pump Services

A heat pump offers an all-in-one solution for:

  • Heating and Cooling
  • Cutting Down on Energy Bills
  • Providing Reliable Comfort

Pat’s will help you select and install the right heat pump for your home – perfect for tackling Oconomowoc’s humidity during the summer and warming your space when the snow piles up in winter.

Hybrid Heating Technology

Need a bit more power when the thermometer dives? Our Hybrid Heating Service combines a heat pump with a furnace, guaranteeing a cozy home even on those bitterly cold nights near Rosenow Creek or Lake Drive. It’s an efficient, cost-effective way to keep your family comfortable!

Superior Air Purification Solutions

Indoor air can hide the following pollutants that aggravate allergies:

  • Pollen
  • Dust
  • Other Particulates

Pat’s offers Air Purification Solutions to help clear the air, which is a relief for families living near the city’s bustling center or by the scenic waterfront. We install top-grade filters, as well as humidifiers and dehumidifiers, to help maintain optimum moisture levels all year long.

State-of-the-Art Temperature Control in Oconomowoc

Take charge of your home’s climate with our modern smart thermostats. You’ll be able to monitor and adjust temperatures from anywhere – especially handy if you’ve just spent the day shopping around downtown Oconomowoc and want to return to a perfectly set home environment. Plus, zoning control gives you the power to regulate different rooms individually, saving you energy and costs.

Commercial Services for Local Oconomowoc Businesses

Pat’s also supports the many enterprises around Oconomowoc – whether you’re located near Lake Drive or around Wisconsin Avenue. Our Commercial HVAC Services cover everything from new installations to maintenance on existing systems, helping keep your workspace productive and comfortable for employees and customers alike.

Trusted Electrical Services in Oconomowoc

HVAC isn’t our only specialty. We provide a range of Electrical Services for homes and businesses across Oconomowoc:

Contact Pat’s Team Today!

Got a furnace emergency near Lake Drive? Need an AC tune-up by the Oconomowoc River? Pat’s Heating & Air Conditioning is standing by. Call 262-208-5829 or fill out our online form, and we’ll get back to you promptly. Experience the same expert service that thousands of satisfied customers in Oconomowoc already trust!

We offer the following services (and more!) in Oconomowoc, WI:

 

Recent Jobs and Reviews in Oconomowoc, WI

Job Locations and Reviews

Successfully installed a Lennox EL297V 70K BTU furnace with proper leveling to ensure optimal performance. Replaced approximately 4 feet of 2-inch PVC cellular core venting and reconnected existing ecobee thermostat. Installation was completed with no active heat as specified in work order.
Successfully installed a Lennox EL297V 70K BTU furnace with proper leveling to ensure optimal performance. Replaced approximately 4 feet of 2-inch PVC cellular core venting and reconnected existing ecobee thermostat. Installation was completed with no active heat as specified in work order.
Alex M.
Alex M. Checked in
Successfully installed a Lennox EL297V 70K BTU furnace with proper leveling to ensure optimal performance. Replaced approximately 4 feet of 2-inch PVC cellular core venting and reconnected existing ecobee thermostat. Installation was completed with no active heat as specified in work order.
Oconomowoc, WI 53066
Diagnosed no-heat complaint on aging furnace system; inspection revealed failed heat exchangers making unit unsafe for continued operation. Provided customer with replacement options and thoroughly explained safety concerns associated with compromised heat exchangers.
Diagnosed no-heat complaint on aging furnace system; inspection revealed failed heat exchangers making unit unsafe for continued operation. Provided customer with replacement options and thoroughly explained safety concerns associated with compromised heat exchangers.
Jacob K.
Jacob K. Checked in
Diagnosed no-heat complaint on aging furnace system; inspection revealed failed heat exchangers making unit unsafe for continued operation. Provided customer with replacement options and thoroughly explained safety concerns associated with compromised heat exchangers.
Oconomowoc, WI 53066
Diagnosed Lennox furnace system with no heat complaint. Confirmed unit was blowing cold air due to failed inducer motor. Provided temporary space heaters and recommended furnace replacement as the best solution.
Diagnosed Lennox furnace system with no heat complaint. Confirmed unit was blowing cold air due to failed inducer motor. Provided temporary space heaters and recommended furnace replacement as the best solution.
Brady E.
Brady E. Checked in
Diagnosed Lennox furnace system with no heat complaint. Confirmed unit was blowing cold air due to failed inducer motor. Provided temporary space heaters and recommended furnace replacement as the best solution.
Oconomowoc, WI 53066
Completed full HVAC system replacement with installation of EL297E 45K Furnace, ML13KC1 1.5 Ton condenser unit, and 24B-71 cased coil. Added new condensate pump and retrieved two space heaters from the residence. System was properly connected to existing ductwork with appropriate filter installation (16 x 20 x 1).
Completed full HVAC system replacement with installation of EL297E 45K Furnace, ML13KC1 1.5 Ton condenser unit, and 24B-71 cased coil. Added new condensate pump and retrieved two space heaters from the residence. System was properly connected to existing ductwork with appropriate filter installation (16 x 20 x 1).
Troy S.
Troy S. Checked in
Completed full HVAC system replacement with installation of EL297E 45K Furnace, ML13KC1 1.5 Ton condenser unit, and 24B-71 cased coil. Added new condensate pump and retrieved two space heaters from the residence. System was properly connected to existing ductwork with appropriate filter installation (16 x 20 x 1).
Oconomowoc, WI 53066
Performed comprehensive deep cleaning maintenance on Bosch boiler system that was heavily contaminated with debris. Serviced heat exchanger using soot saw and brushes to remove accumulated buildup, and replaced critical components including igniter, flame sensor, and gaskets to restore proper operation.
Performed comprehensive deep cleaning maintenance on Bosch boiler system that was heavily contaminated with debris. Serviced heat exchanger using soot saw and brushes to remove accumulated buildup, and replaced critical components including igniter, flame sensor, and gaskets to restore proper operation.
Michael M.
Michael M. Checked in
Performed comprehensive deep cleaning maintenance on Bosch boiler system that was heavily contaminated with debris. Serviced heat exchanger using soot saw and brushes to remove accumulated buildup, and replaced critical components including igniter, flame sensor, and gaskets to restore proper operation.
Oconomowoc, WI 53066
Oconomowoc, WI - Diagnosed no heat condition on older Goodman residential furnace located in basement utility area. Identified failed pressure switches as the root cause of system failure. Unit is out of warranty; ordered replacement pressure switches and scheduled return appointment for installation.
Mark E.
Mark E. Checked in
Diagnosed no heat condition on older Goodman residential furnace located in basement utility area. Identified failed pressure switches as the root cause of system failure. Unit is out of warranty; ordered replacement pressure switches and scheduled return appointment for installation.
Oconomowoc, WI 53066
Completed annual maintenance service on Daikin furnace system per CCC Quality Plan agreement. Replaced failed inducer motor under parts warranty and installed new 16x25x5 filter. Addressed drainage issues by installing new drain hose. System includes Carrier AirCare humidifier. Recommended follow-up inspection of inducer boot and tubing to check for additional debris.
Completed annual maintenance service on Daikin furnace system per CCC Quality Plan agreement. Replaced failed inducer motor under parts warranty and installed new 16x25x5 filter. Addressed drainage issues by installing new drain hose. System includes Carrier AirCare humidifier. Recommended follow-up inspection of inducer boot and tubing to check for additional debris.
Brady E.
Brady E. Checked in
Completed annual maintenance service on Daikin furnace system per CCC Quality Plan agreement. Replaced failed inducer motor under parts warranty and installed new 16x25x5 filter. Addressed drainage issues by installing new drain hose. System includes Carrier AirCare humidifier. Recommended follow-up inspection of inducer boot and tubing to check for additional debris.
Oconomowoc, WI 53066
Responded to service call for Aprilaire humidifier with illuminated service light and slow operation. Diagnostic inspection revealed water panel required replacement. Successfully installed new water panel, resolving the service issue.
Responded to service call for Aprilaire humidifier with illuminated service light and slow operation. Diagnostic inspection revealed water panel required replacement. Successfully installed new water panel, resolving the service issue.
Jacob K.
Jacob K. Checked in
Responded to service call for Aprilaire humidifier with illuminated service light and slow operation. Diagnostic inspection revealed water panel required replacement. Successfully installed new water panel, resolving the service issue.
Oconomowoc, WI 53066
Responded to no-heat service call for a system less than 10 years old that was also due for maintenance. Performed full system tune-up, discovering severely clogged filter that was restricting proper airflow. Replaced dirty filter, cleaned components, and restored normal heating operation. System now functioning properly.
Responded to no-heat service call for a system less than 10 years old that was also due for maintenance. Performed full system tune-up, discovering severely clogged filter that was restricting proper airflow. Replaced dirty filter, cleaned components, and restored normal heating operation. System now functioning properly.
Jacob K.
Jacob K. Checked in
Responded to no-heat service call for a system less than 10 years old that was also due for maintenance. Performed full system tune-up, discovering severely clogged filter that was restricting proper airflow. Replaced dirty filter, cleaned components, and restored normal heating operation. System now functioning properly.
Oconomowoc, WI 53066
Completed full system installation of a Lennox HVAC system, including EL297V 90K furnace, EL15KC1 3-ton air conditioner, and 36C-71 coil with 65ft new line set. Utilized existing media filter and cold air return, installed back venting with 2.5" PVC and neutralizer, and properly supported all PVC connections. Repurposed former stove circuit for furnace power supply as requested by customer.
Completed full system installation of a Lennox HVAC system, including EL297V 90K furnace, EL15KC1 3-ton air conditioner, and 36C-71 coil with 65ft new line set. Utilized existing media filter and cold air return, installed back venting with 2.5" PVC and neutralizer, and properly supported all PVC connections. Repurposed former stove circuit for furnace power supply as requested by customer.
Troy S.
Troy S. Checked in
Completed full system installation of a Lennox HVAC system, including EL297V 90K furnace, EL15KC1 3-ton air conditioner, and 36C-71 coil with 65ft new line set. Utilized existing media filter and cold air return, installed back venting with 2.5" PVC and neutralizer, and properly supported all PVC connections. Repurposed former stove circuit for furnace power supply as requested by customer.
Oconomowoc, WI 53066
Oconomowoc, WI - Performed annual maintenance on Bryant furnace under CCC Quality Plan. Completed standard clean and check service, replaced 16x25x4 filter #35, installed new AA pad, and conducted humidifier tune-up. System is now operating properly with all maintenance items addressed.
Jay T.
Jay T. Checked in
Performed annual maintenance on Bryant furnace under CCC Quality Plan. Completed standard clean and check service, replaced 16x25x4 filter #35, installed new AA pad, and conducted humidifier tune-up. System is now operating properly with all maintenance items addressed.
Oconomowoc, WI 53066
Responded to no heat call for 10+ year old furnace system. Diagnosed faulty inducer motor which had failed, preventing proper combustion and heat production. Provided customer with replacement options and documented system condition with photos for quote purposes as requested by property owner.
Responded to no heat call for 10+ year old furnace system. Diagnosed faulty inducer motor which had failed, preventing proper combustion and heat production. Provided customer with replacement options and documented system condition with photos for quote purposes as requested by property owner.
Jacob K.
Jacob K. Checked in
Responded to no heat call for 10+ year old furnace system. Diagnosed faulty inducer motor which had failed, preventing proper combustion and heat production. Provided customer with replacement options and documented system condition with photos for quote purposes as requested by property owner.
Oconomowoc, WI 53066
Performed scheduled maintenance agreement service on Carrier furnace system. Inspected all components including condensate collection system and ductwork. All systems functioning properly with no issues identified.
Performed scheduled maintenance agreement service on Carrier furnace system. Inspected all components including condensate collection system and ductwork. All systems functioning properly with no issues identified.
Jacob K.
Jacob K. Checked in
Performed scheduled maintenance agreement service on Carrier furnace system. Inspected all components including condensate collection system and ductwork. All systems functioning properly with no issues identified.
Oconomowoc, WI 53066
Completed annual furnace maintenance under CCC Premium Plan agreement. Installed 14x25x1 filter and performed complete system inspection. All components functioning correctly with no issues identified at this time.
Completed annual furnace maintenance under CCC Premium Plan agreement. Installed 14x25x1 filter and performed complete system inspection. All components functioning correctly with no issues identified at this time.
Jay T.
Jay T. Checked in
Completed annual furnace maintenance under CCC Premium Plan agreement. Installed 14x25x1 filter and performed complete system inspection. All components functioning correctly with no issues identified at this time.
Oconomowoc, WI 53066
Oconomowoc, WI - Performed annual furnace clean and check maintenance service under customer's prepaid CCC Quality Plan. Inspected all system components and confirmed proper operation. System functioning correctly with no issues identified at this time.
Jay T.
Jay T. Checked in
Performed annual furnace clean and check maintenance service under customer's prepaid CCC Quality Plan. Inspected all system components and confirmed proper operation. System functioning correctly with no issues identified at this time.
Oconomowoc, WI 53066
Oconomowoc, WI - Performed annual maintenance service on residential furnace system per CCC Quality Plan agreement (#201, #35). Completed standard clean and check procedure on horizontal furnace unit installed in basement. Additionally, conducted humidifier tune-up with attention to drain line servicing.
Jay T.
Jay T. Checked in
Performed annual maintenance service on residential furnace system per CCC Quality Plan agreement (#201, #35). Completed standard clean and check procedure on horizontal furnace unit installed in basement. Additionally, conducted humidifier tune-up with attention to drain line servicing.
Oconomowoc, WI 53066
Performed fall maintenance service on customer's furnace under CCC Quality Plan. Unit is significantly aged (30+ years) with standard ductwork and connections observed in basement utility area. Recommended replacement quote due to furnace age and potential efficiency/reliability concerns.
Performed fall maintenance service on customer's furnace under CCC Quality Plan. Unit is significantly aged (30+ years) with standard ductwork and connections observed in basement utility area. Recommended replacement quote due to furnace age and potential efficiency/reliability concerns.
Jay T.
Jay T. Checked in
Performed fall maintenance service on customer's furnace under CCC Quality Plan. Unit is significantly aged (30+ years) with standard ductwork and connections observed in basement utility area. Recommended replacement quote due to furnace age and potential efficiency/reliability concerns.
Oconomowoc, WI 53066
Oconomowoc, WI - Diagnosed no heat complaint on 11-1/3 year old furnace. Discovered high limit trip caused by a severely clogged air filter. Restored system operation by replacing filter and verifying proper ignition and heat cycle.
Brady E.
Brady E. Checked in
Diagnosed no heat complaint on 11-1/3 year old furnace. Discovered high limit trip caused by a severely clogged air filter. Restored system operation by replacing filter and verifying proper ignition and heat cycle.
Oconomowoc, WI 53066
Oconomowoc, WI - Performed standard furnace tune-up on 15-year-old LP system. Completed regular cleaning and inspection of all components including burners, control modules, and electrical connections. Unit is operating within normal parameters and remains in good condition despite age, with TRION Air Bear Supreme filter system in place.
Paul M.
Paul M. Checked in
Performed standard furnace tune-up on 15-year-old LP system. Completed regular cleaning and inspection of all components including burners, control modules, and electrical connections. Unit is operating within normal parameters and remains in good condition despite age, with TRION Air Bear Supreme filter system in place.
Oconomowoc, WI 53066
Oconomowoc, WI - Performed annual maintenance agreement service on the customer's furnace. System was cleaned and inspected according to quality plan standards. All components tested within normal operating parameters with no issues identified. Replaced 16x25x1 air filter as part of scheduled service. Invoice will be mailed to customer.
Paul M.
Paul M. Checked in
Performed annual maintenance agreement service on the customer's furnace. System was cleaned and inspected according to quality plan standards. All components tested within normal operating parameters with no issues identified. Replaced 16x25x1 air filter as part of scheduled service. Invoice will be mailed to customer.
Oconomowoc, WI 53066

AC Repair, AC Installation, Furnace Repair, Heating Repair & Heating Service in Oconomowoc, WI

Furnace Service in Oconomowoc, WI | Heating Repair

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Words From Around Town
After initially doing some comparison shopping, I recently made the large investment of having Pat’s install a Kohler, whole home, back-up generator. From the initial in home evaluation by Robert...
Eric M
We had an excellent experience with Pat’s Heating and Air Conditioning. They are extremely professional and gave us wonderful customer service from the moment that we called them. They were...
Judy C
We had our furnace replaced from Pat’s and they were fantastic. Very professional and today’s service techs were extremely helpful during the install with explaining the steps. Oh…loved the chocolates!...
Margaret O
Outstanding service with excellent communication. Salesman was professional and listened to our concerns and answered our questions thoroughly. We received both a phone call and emails detailing our appointment for...
Thomas D

Oconomowoc, WI