Business Details
41 Years
experience
Emergency
services
Expert HVAC Services in Mukwonago, WI
Employee-owned since 1985, Donovan & Jorgenson has built a reputation as a trusted HVAC service and installation company serving Southeastern Wisconsin. Our NATE-certified technicians deliver expert heating, cooling, and air quality solutions, prioritizing customer satisfaction and high-quality products. With decades of industry experience, we maintain active memberships in leading organizations like the National Association of Remodeling Industry and the Air Conditioning Contractors of America. Our commitment to safety excellence was recognized with the 2023 Acuity Insurance Safety Award, underscoring our dedication to safe working conditions for employees and clients.We provide 24/7 emergency heating repair services and maintain three convenient locations in Milwaukee, New Berlin, and Mukwonago to serve residential and commercial clients across the region. Our team educates customers on recommended HVAC services to ensure optimal system performance while participating in state and national organizations to maintain industry leadership standards. We guarantee precise installations and repairs for furnaces, boilers, air conditioners, and heat pumps, backed by transparent estimates and cost-effective rates.
Services
HVAC Repair
Furnace Installation
Boiler Service
Thermostat Repair
Ductless Systems
Air Conditioning Maintenance
Emergency Heating Service
Commercial HVAC Solutions
System Replacement
Preventative Maintenance
Details
- Year established: 1985
Highlights and features
- 24/7 emergency heating repair services for urgent needs
- NATE-certified technicians with advanced industry training
- Recipient of 2023 Acuity Insurance Safety Award for workplace safety
- Serving Southeastern Wisconsin communities since 1985
- Transparent estimates and cost-effective HVAC solutions
Associations and certifications
- NATE (North American Technician Excellence)
- National Association of Remodeling Industry
- Air Conditioning Contractors of America
- Milwaukee Better Business Bureau
- Wisconsin Independent Heating Contractors Association
What people say
Better service
Good reviews
Furnace running by noon
Great web page
Knowledgeable and quick
Services
HVAC Repair
Our NATE-certified technicians provide comprehensive HVAC repair services for residential and commercial properties. We handle gas and oil furnaces, boilers, heat pumps, and ductless systems with 24/7 emergency availability. Using advanced diagnostic tools and manufacturer-approved parts, we restore system functionality while maintaining safety standards and warranty compliance. Our technicians complete repairs promptly to minimize discomfort during extreme weather conditions.
Furnace Installation
We specialize in installing high-efficiency furnaces with AFUE ratings of 90% or higher. Our experts assess home size, insulation levels, and existing ductwork to recommend optimal heating solutions. We offer gas, oil, and electric furnace options with proper sizing calculations to ensure maximum efficiency and comfort for Wisconsin's climate conditions.
Boiler Service
Our technicians service all boiler types including natural gas, oil, electric, and hydronic systems. We perform annual inspections, efficiency tune-ups, and emergency repairs while maintaining safety protocols. We also offer boiler replacement consultations with Energy Star-rated models for improved energy efficiency and reduced operating costs.
Thermostat Repair
We diagnose and repair all thermostat types including smart, programmable, and standard models. Our technicians address wiring issues, calibration problems, and system compatibility concerns. We also offer thermostat upgrades to energy-efficient models that integrate with existing HVAC systems for improved temperature control and energy savings.
Ductless Systems
We install and service ductless mini-split systems for homes without existing ductwork. These energy-efficient systems provide zoned heating and cooling with quiet indoor units. Our technicians handle installations for single-room applications or multi-zone systems, ensuring proper refrigerant lines and electrical connections while maintaining manufacturer warranties.
Questions
How do I know if my HVAC filter is installed correctly?
Check the airflow arrow on the filter; it should face toward the furnace or air handler for proper installation.
Is annual HVAC maintenance really necessary?
Yes, manufacturers recommend yearly maintenance to ensure safe operation, maximize efficiency, and extend equipment lifespan.
What constitutes an HVAC emergency in Wisconsin?
Broken furnaces during freezing weather and non-functional AC units when temperatures exceed 82°F qualify as HVAC emergencies requiring immediate attention.
How often should I service my heating and cooling equipment?
Annual tune-ups are recommended for furnaces, while air conditioning systems require maintenance when outdoor temperatures exceed 60°F.
What are the benefits of ductless HVAC systems?
Ductless systems offer improved energy efficiency (up to 60% savings), zoned temperature control, quieter operation, and easier installation without ductwork.
How can I reduce my HVAC energy costs?
Install programmable thermostats (saving up to 20% on heating costs), use energy-efficient appliances, and implement whole-house humidifiers to lower thermostat settings.