Waukesha sees a broad range of temperatures year-round – from summer days that can climb past 80°F to icy winters around 12.2°F that can freeze part of the Fox River!
Your home needs an HVAC system that’s up to this challenge, so whether you’re near Fox Point or closer to Singing Hills, you can count on Pat’s Heating & Air Conditioning for reliable services that keep you comfortable in any weather.
We’ve worked in Southeast Wisconsin for over 36 years, and our technicians have handled everything from routine tune-ups to emergency repairs – so our team is ready to ensure your heating and cooling systems run smoothly.
Why Choose Pat’s Heating & Air Conditioning in Waukesha?
See what keeps your neighbors in Waukesha confident in Pat’s:
- Flexible Payment Options: We offer plans that work with your budget, so you don’t have to worry about breaking the bank.
- Leading Expertise: We’ve spent decades honing our knowledge across all HVAC technologies.
- Quick Call-Outs: Our team covers Waukesha from end to end, arriving fast no matter if you’re off Merrill Crest or near Springbrook.
- Customer Satisfaction Guarantee: Our top priority is your comfort and peace of mind. If something’s not right, we’ll make it right.
- 24-Hour Care: Experiencing a furnace breakdown in the dead of winter or a sudden AC failure on a warm weekend? We’re here anytime, day or night.
Waukesha Air Conditioning Installation, Repair & Maintenance
Temperatures in Waukesha can feel stuffy during mid-summer, especially when humidity ramps up near the Fox River. Our Air Conditioning Installation service ensures your home stays cool, even when July heat rolls in.
If you already have an AC system but it’s making unusual noises or struggling to keep your home comfortable, our 24/7 repair and maintenance services have you covered! We’ll diagnose and fix issues quickly to prevent further damage.
Professional Ductless HVAC Solutions in Waukesha
Don’t want to install a full duct system in an older home or remodel? Our Ductless HVAC Installations might be the perfect solution! These compact, wall-mounted units cool or heat only the spaces you use most, which is especially handy if you have a historic property near Cutler Park or an apartment downtown.
They’re efficient and ideal for saving energy in those hard-to-reach spots.
Convenient VRF Systems for All Seasons
Looking for a quick and versatile way to heat or cool your space? Variable Refrigerant Flow (VRF) systems can switch modes at the press of a button. Whether you’re near Lowell Park or close to the Airport, our technicians will recommend a VRF setup that matches your home’s layout – making it simple to enjoy comfortable indoor temperatures all year!
Comprehensive Heating Solutions Across Waukesha
Harsh Wisconsin winters can put your heating system to the test. Luckily, Pat’s provides full-service support to keep you warm:
24/7 Heating Repairs
If your furnace is acting up late at night or your boiler refuses to start on a frosty morning, we’re just a phone call away. Our factory-trained experts diagnose problems quickly and offer budget-friendly fixes that last.
Boiler & Radiant Heating Installation & Maintenance
Looking to upgrade an older system? Our Boiler & Radiant Heating Service will see you through morning to night with reliable heat – perfect for below-10-degree days in Waukesha. We’ll schedule periodic maintenance for the system when it’s installed so that it runs at its most efficient.
Heat Pump Services for Efficiency
Heat pumps save you money on heat and cooling by transferring energy, rather than producing it anew. We’ll guide you through choosing the perfect heat pump for your house and having it installed to perform at its highest level.
With local energy prices on the rise, this is a perfect choice for many Waukesha residents.
Hybrid Heating: The Best of Both Worlds
Combining a heat pump with a traditional furnace gives you a Hybrid Heating system that adjusts automatically to external temperature!
This translates to lower bills in moderate weather but plenty of warmth when the chill hits!
Cutting-Edge Air Purification in Waukesha
You’d be surprised at how many allergens can be present even in a well-kept home, including:
- Dust
- Pet Hair
- Pollen
- Bacteria
- Other Airborne Particles
We install top-quality Air Purification Systems that help reduce allergens and pollutants – especially beneficial for households near busy streets like Moreland Boulevard or College Avenue.
We also offer humidifiers and dehumidifiers to balance moisture levels, which can be crucial for Waukesha’s fluctuating humidity.
Enhanced Temperature Control in Waukesha
Whether you’re in the heart of downtown or on the outskirts of Waukesha, our smart thermostat installations let you manage heating and cooling via a user-friendly app!
Want different temperatures in your bedrooms compared to your living room? We can also set up zoning control to keep every corner of your home comfortable without wasting energy.
Cost-Effective Commercial Services for Waukesha Businesses
From offices near the Waukesha County Courthouse to retail spaces off Sunset Drive, Pat’s offers Commercial HVAC Services that meet every business requirement.
We can install systems that are made for efficiency so your employees and customers can stay comfortable year-round.
Trusted Electrical Solutions in Waukesha
Pat’s does more than just HVAC. Our range of Electrical Services includes:
- Smoke and Carbon Monoxide Detectors
- Generator Services
- Circuit Breaker Installation
- EV Chargers
- Fans & Fixtures
- Electrical Panel Upgrades
Contact Pat’s Team Today!
Whether you need an urgent repair or simply want to speak with someone about replacing your outdated AC, Pat’s Heating & Air Conditioning is here to assist.
Call 262-208-5829 or fill out our online contact form, and we’ll be in touch with you soon – we can’t wait to assist you in staying comfortable all year round.
Pat’s Heating & Air Conditioning has completed 20 jobs in Waukesha, WI between May 2026 and September 2026. The most recent job was on September 24, 2026.Recent Jobs and Reviews in Waukesha, WI
Waukesha, WI at a glance
Job Locations and Reviews
Completed comprehensive furnace tune-up and enrolled system in Premium CCC maintenance program. Performed full seasonal maintenance inspection on large furnace unit, including internal component examination, electrical connections verification, and mechanical system assessment. Unit found to be operating in excellent condition with all components functioning properly and no repairs required at this time.
Installed Kohler 12RESV 12KW air-cooled home standby generator with steel cabinet on concrete pad adjacent to existing AC unit on side of residence. Mounted 100-amp, 16-space automatic transfer switch next to main electrical panel to provide backup power to owner-selected circuits during outages. Completed all line voltage and low-voltage wiring connections between generator, transfer switch, and electrical panel per manufacturer specifications. Installed battery and carburetor heater for cold weather operation.
Relocated three small evergreen shrubs from installation area to accommodate generator placement. Ran natural gas supply line from existing gas meter to generator, including all necessary pipe, fittings, and connections for fuel supply. Painted exterior gas piping gray using oil-based paint for corrosion protection and aesthetic finish. Verified proper gas pressure and flow to unit.
Tested automatic transfer switch operation and confirmed seamless transition between utility a
Completed furnace replacement in 1870 square foot ranch home. Removed existing "B" width furnace and installed new unit with proper electrical connections to Square D QO panel, including dedicated 15-amp circuit for furnace and 30-amp circuit for AC system. Replaced 25 feet of 2-inch cellular core PVC venting material for combustion air and exhaust. Reused existing return air drop and media filter cabinet to maintain air quality system. Connected to existing 35-foot refrigerant line set for compatibility with air conditioning system. Verified all gas line connections, tested system operation, and confirmed proper airflow throughout. Installation completed in basement mechanical room with all components mounted securely and meeting code requirements.
Completed prepaid maintenance visit on air conditioning system. Inspected evaporator coil assembly and found significant dust and debris accumulation on filter media and coil fins, with visible dirt buildup affecting airflow efficiency. Documented moisture present on coil surfaces indicating active condensation during operation. Photographed heavily contaminated air filter showing matted fibrous material and particulate matter throughout filtering surface. Observed dirt streaking across evaporator coil fins, particularly concentrated in center sections, while some areas remained cleaner. System operational at time of inspection with condensation visible on housing components. Customer enrolled in annual quality plan providing parts and filter discount benefits.
Responded to no cooling complaint on 20+ year old residential air conditioning system. Upon arrival, customer reported unit runs continuously for 3+ hours without reaching setpoint temperature, followed by abnormal vibration. Performed diagnostic evaluation and confirmed low refrigerant charge on R22 system. Explained phased-out refrigerant status and limited availability of R22. Documented system age and declining performance. Provided replacement options due to obsolete refrigerant type and age-related system degradation.
Responded to callback for recent installation not maintaining desired temperature of 71°F, remaining at 74°F throughout the day. Performed system inspection of outdoor condenser unit and electrical components, verified capacitor operation and electrical connections, documented equipment condition with photos. Unit operational at time of service with all components functioning within normal parameters.
Responded to no cooling complaint on aging Magic Pack HVAC system. Upon inspection, discovered rapid loss of refrigerant indicating a significant leak in the system. Given the age of the unit (10+ years) and the extent of the refrigerant loss, provided quote for complete system replacement as the most cost-effective solution. Discussed findings with property owner and recommended new unit installation rather than attempting repairs on the aging equipment.
Completed annual CCC Quality Plan maintenance on residential air conditioning system. Performed comprehensive inspection of outdoor condenser unit, verified proper electrical connections at capacitor and contactor assembly, confirmed system operational status, and renewed maintenance agreement with 10% discount on parts, repairs, and filters including 16x25x4 filter size.
Performed annual AC clean and check as part of CCC Quality Plan renewal. System inspected and found to be operating properly with no issues identified. Installed 16x25x1 filter and verified all components functioning correctly.
Completed installation of ML13KC1 2-ton air conditioning system with 24B-71 cased coil for 1,300 square foot residence with 8 supply registers. Replaced 30-foot refrigerant line set with "B" width configuration and installed 20-amp breaker in Bryant Square D QO electrical panel. Air handler unit mounted in utility space with proper drainage confirmed and all electrical connections completed to manufacturer specifications.
Completed prepaid HVAC maintenance visit and addressed customer concern regarding basement venting causing window condensation. Inspected PVC vent piping system in basement area and adjusted vent configuration to redirect airflow away from window to prevent fogging issues. Performed standard maintenance inspection of heating and cooling equipment with all systems operating within normal parameters.
Completed annual air conditioning maintenance and inspection under quality plan agreement. Performed comprehensive clean and check of residential AC system, including both indoor furnace unit and outdoor condenser. Verified all mechanical and electrical components operating within normal parameters, checked refrigerant levels, inspected wiring connections, and confirmed proper airflow. System found in good working condition with no deficiencies noted or repairs required.
Completed scheduled maintenance agreement service on residential air conditioning system. Performed comprehensive inspection of outdoor condenser unit, which showed normal operational wear with moderate debris accumulation on coil fins. Unit is functioning properly with no mechanical issues identified. Condenser is properly positioned on concrete pad with adequate clearance and drainage. All components inspected and found to be in good working order.
Performed complete air conditioning system startup on newly installed unit. Utilized manifold gauge set to verify proper refrigerant pressures and system charge, confirming both high and low side readings were within manufacturer specifications. System operational and cooling effectively upon completion of startup procedures.
Completed air conditioning maintenance on aging MagicPak unit including system cleaning and installation of 16x25x1 filter. Unit is operational but showing signs of age and wear. Discussed system condition and future replacement options with property owner, who declined fall furnace maintenance at this time.
Installed a Kohler 26RCA 26KW standby generator system with natural gas connection at residential property over two installation days following initial pad placement. Installation included one Kohler RXT 200-amp automatic transfer switch and two Kohler load shed modules to manage electrical loads during generator operation. Connected generator to existing natural gas meter, verified all electrical connections to main service panel, programmed transfer switch for automatic operation during utility power loss, and tested system for proper functionality.
Performed comprehensive air conditioning tune-up on 32-year-old R-22 system for new customer. Conducted system diagnostics and pressure testing, which revealed unit is operating with low refrigerant charge. Documented equipment condition with photographs and submitted findings to office for replacement system quotation due to age of unit and R-22 phase-out considerations.
Completed prepaid annual air conditioning maintenance inspection per service agreement. Performed comprehensive system diagnostics including refrigerant pressure and temperature measurements. Verified R-410A refrigerant charge levels using manifold gauges and digital thermocouple thermometer. Current superheat reading measured at 9°F, below the recommended 19°F target for non-TXV system, indicating adequate refrigerant charge. All system parameters found to be within acceptable operating range. Unit operating properly with no issues identified at this time. Recommended continuing regular preventive maintenance schedule to ensure optimal system performance and longevity.
Performed airflow diagnostic and static pressure testing on residential HVAC system to address inadequate heating and cooling in two upstairs rooms. Inspected ductwork in finished basement and attic spaces, evaluated return air operation for potential reverse flow issues, and assessed airflow in master bedroom. Documented system model 58MVC100--F--10120 and recommended comfort advisor consultation for potential ductless split system installation to resolve persistent airflow deficiencies in affected areas.
Performed complete furnace tune-up on 1999 unit including inspection of heat exchanger, flame sensor, igniter, inducer motor, blower motor, burners, venting, safety limit, and gas operation. Cleaned blower compartment, drain trap, and drains. Recorded operational readings: inducer motor 2.7A, gas pressure 1.7/3.4inWC, blower motor 11.1A, HSI 52.4 ohms, heat rise 40°F. Testing revealed heat exchanger failure with carbon monoxide levels at 195ppm, exceeding safe operational limits. Blower motor also showing signs of failure. Due to age of equipment and critical safety concerns with heat exchanger, system replacement is strongly recommended. Customer advised to replace 16x25x1 filter and contact office for free replacement quote.
