HVAC Repair, Installation & Maintenance in Oconomowoc, WI
Trusted HVAC Service for Oconomowoc Homes & Businesses
ZIM Heating & Cooling proudly provides professional HVAC services throughout Oconomowoc, WI. As the company continuing the trusted legacy of Aasen Heating & Cooling, we’re committed to delivering dependable heating, cooling, indoor air quality, and commercial HVAC solutions backed by experienced technicians, honest recommendations, and responsive local service.
- 4.8 Star Rating
- Licensed & Insured
- Family-Owned
- 24/7 Emergency Service
Former Aasen Heating & Cooling Customer?
Professional HVAC Installation & Service in Oconomowoc, WI
Oconomowoc homeowners experience everything from humid Lake Country summers to long Wisconsin winters, making dependable heating and cooling essential throughout the year. Whether your system needs a quick repair, seasonal maintenance, or complete replacement, ZIM Heating & Cooling delivers reliable HVAC solutions designed to keep your home comfortable in every season.
As the company now continuing the service previously provided by Aasen Heating & Cooling, we’re proud to support longtime customers while welcoming new homeowners and businesses throughout Oconomowoc. Our nearby headquarters in Waukesha allows us to provide prompt response times, professional workmanship, and the personalized service local customers expect.
Our HVAC Services in Oconomowoc, WI
As a full-service HVAC provider serving Oconomowoc, ZIM Heating & Cooling offers comprehensive solutions for both residential and commercial properties. Our services include HVAC Repair, HVAC Installation, HVAC Maintenance, Indoor Air Quality solutions, and Commercial HVAC services. Whether you’re upgrading an aging system, scheduling preventative maintenance, or responding to an unexpected breakdown, our experienced technicians deliver dependable solutions that improve comfort, efficiency, and long-term reliability.
Why Oconomowoc Homeowners Choose ZIM Heating & Cooling
Choosing an HVAC contractor is about more than equipment—it’s about trusting the people who stand behind the work. As the company continuing the legacy of Aasen Heating & Cooling, ZIM Heating & Cooling is proud to provide the same commitment to dependable local service while offering expanded resources, experienced technicians, and a complete range of heating and cooling solutions.
From historic homes near downtown Oconomowoc to newer developments throughout Lake Country, we understand the unique heating, cooling, and indoor air quality challenges Wisconsin homeowners face. Our goal is simple: deliver honest recommendations, quality workmanship, and lasting comfort backed by responsive customer service.
Experienced Technicians
Fast Response Times
Upfront Pricing
Locally Owned & Operated
What to Expect When You Call ZIM
Working with ZIM Heating & Cooling means partnering with a local HVAC team that values communication, professionalism, and dependable service. Because we’re located just minutes away in neighboring Waukesha, we’re able to respond quickly throughout Oconomowoc while providing the personal attention customers deserve. From your first phone call through project completion, we make every step straightforward, transparent, and focused on your comfort.
Call or
Request Service
Call or text us anytime to schedule HVAC service in Pewaukee. Same-day appointments are often available when heating or cooling problems can’t wait.
Diagnosis & Recommendation
One of our NATE-certified technicians will perform a complete system evaluation, explain the issue clearly, and provide straightforward recommendations with upfront pricing before any work begins.
Service &
Follow-Up
Once repairs or installation are complete, we thoroughly test your HVAC system, clean the work area, and ensure everything is operating properly before we leave.
Proudly Serving Oconomowoc and Surrounding Communities
ZIM Heating & Cooling proudly serves homeowners and businesses throughout Oconomowoc and the surrounding Lake Country communities, including Summit, Okauchee, Ixonia, Ashippun, Hartland, Delafield, Pewaukee, Dousman, Wales, and nearby Southeastern Wisconsin communities. Whether you’re located near downtown Oconomowoc, along one of the area’s beautiful lakes, or in a growing residential neighborhood, you can count on our experienced team for dependable heating and cooling solutions.
Need HVAC Service in Oconomowoc?
Whether you’re a longtime Oconomowoc homeowner, a former Aasen Heating & Cooling customer, or simply looking for dependable local HVAC service, ZIM Heating & Cooling is ready to help. Call or text (262) 388-4763 or request service online for professional repairs, installations, maintenance, and emergency HVAC service from a team you can trust.
Frequently Asked Questions About HVAC Services in Oconomowoc, WI
How quickly can you respond to HVAC issues in Oconomowoc?
Because our headquarters are located just minutes away in neighboring Waukesha, we’re able to provide fast response times throughout Oconomowoc. Same-day appointments are often available when heating or cooling problems require immediate attention.
Is Aasen Heating & Cooling now part of ZIM Heating & Cooling?
Yes. ZIM Heating & Cooling is proud to continue the trusted service formerly provided by Aasen Heating & Cooling. Former Aasen customers can continue relying on our experienced team for repairs, maintenance, installations, indoor air quality solutions, and commercial HVAC services throughout Oconomowoc.
Do you provide emergency HVAC service in Oconomowoc?
Absolutely. We offer 24/7 emergency HVAC service throughout Oconomowoc for unexpected heating and cooling failures. Whether your furnace stops working during freezing temperatures or your air conditioner quits during a humid summer day, we’re ready to respond as quickly as possible.
Do you service both homes and businesses in Oconomowoc?
Yes. We provide complete residential and commercial HVAC services throughout Oconomowoc, including repairs, installations, maintenance, indoor air quality improvements, and preventative service plans.
What HVAC systems do you work on?
Our technicians service furnaces, central air conditioners, heat pumps, rooftop units, ductwork, smart thermostats, humidifiers, dehumidifiers, air purification systems, and many other residential and commercial HVAC systems.
What should Oconomowoc homeowners do when their furnace short-cycles during extreme cold?
If your furnace repeatedly starts and stops before completing a heating cycle, schedule professional service as soon as possible. Short cycling may indicate thermostat issues, airflow restrictions, overheating, or worn components that can reduce efficiency and lead to more expensive repairs if ignored.
Do you offer indoor air quality solutions for homes in Oconomowoc?
Yes. We install whole-home humidifiers, dehumidifiers, high-efficiency air filtration systems, UV air purifiers, and ventilation solutions designed to improve comfort and indoor air quality throughout every season.
How can a high-efficiency HVAC system help Oconomowoc homeowners save on energy bills?
Modern high-efficiency heating and cooling systems use less energy while providing more consistent indoor comfort. Combined with smart thermostats and routine maintenance, upgrading your HVAC system can significantly reduce monthly utility costs while improving year-round performance.
Do you provide HVAC maintenance and duct system service in Oconomowoc?
Yes. Preventative HVAC maintenance helps extend equipment life, improve energy efficiency, reduce unexpected breakdowns, and maintain healthy indoor airflow. We also inspect duct systems and recommend improvements that enhance overall system performance.
What Our Customers Are Saying
Homeowners and businesses throughout Oconomowoc trust ZIM Heating & Cooling for dependable HVAC service, honest recommendations, and quality workmanship. Former Aasen Heating & Cooling customers and new ZIM customers alike appreciate our commitment to responsive service and lasting comfort. Read a few of our verified Google reviews below, then visit our Google Business Profile to see why so many homeowners across Oconomowoc and Wisconsin’s Lake Country choose ZIM Heating & Cooling for their heating and cooling needs.
Absolutely fantastic service from the initial consultation to the final fine tuning of the system… I highly recommend this very well run family company.
– Kenneth T.
Scheduling was easy and I was pleasantly surprised to get an appointment the next business day… Professional, honest, thorough, and reasonably priced.
– Ali S.
Exceptional service from start to finish! When I called after hours, the owner answered the phone, and put my mind at ease that his team was on the way.
– Gerald S.