Residential HVAC Services
Whether your furnace stops working on a cold January night or your A/C gives out in the summer heat, D&K is ready to respond. We install, replace, and repair all types of home heating and cooling equipment — with 24/7 emergency availability.
Equipment We Install & Service
Furnaces
High-efficiency gas furnace installation, replacement, and repair for all makes and models.
Central Air Conditioning
New A/C installations and replacements sized right for your home — Energy Star rated options available.
Indoor Air Quality
UV light air purifiers, whole-home humidifiers, and electronic air cleaners for healthier indoor air.
Thermostats & Zoning
Smart programmable thermostats and multi-zone systems that put you in control of comfort and energy costs.
Equipment Brands
What's Included With Every Job
- Free estimates on replacement systems
- Free second opinion on any diagnosis
- 100% satisfaction guarantee
- Available manufacturer rebates and federal energy tax credits (up to $1,500)
- Reduced electric bills with Energy Star-rated equipment
- 100% financing available with approved credit
- Honest recommendation for the right system for your home — not the most expensive one
- One-year service agreements with standard filters included
- New construction and home addition installations
24/7 Emergency Repairs: D&K maintains a fleet of professional service technicians serving Chicago and the surrounding suburbs — available 24 hours a day, 7 days a week for emergency heating and cooling repairs.
OUR HVAC SYSTEM MAINTENANCE SERVICES
Regular Maintenance Scheduling
We offer maintenance plans tailored to your specific needs, including seasonal check-ups and tune-ups. Our scheduled maintenance visits ensure that your HVAC system receives the necessary attention and preventive care it requires.
Coil and Component Cleaning
We perform thorough cleaning of coils, blower fans, and other components to remove dirt, dust, and debris that can hinder system performance.
Refrigerant Level Check
We check and adjust refrigerant levels to optimize cooling efficiency and prevent damage to the compressor.
Electrical Connection Inspection
Our technicians inspect electrical connections, wiring, and controls to ensure they are secure and operating safely.
System Performance Assessment
We evaluate the overall performance of your HVAC system, including temperature differentials, airflow, and energy consumption. Based on our findings, we provide recommendations for any necessary repairs or improvements.
By choosing D&K for your HVAC system inspection and maintenance, you can enjoy the benefits of improved energy efficiency, enhanced indoor air quality, and extended system lifespan. Contact us today to schedule an inspection or to learn more about our HVAC maintenance services. Our knowledgeable team is ready to assist you in maintaining a comfortable and healthy indoor environment.
Contact us today to schedule an inspection or to learn more about our HVAC maintenance services. Our knowledgeable team is ready to assist you in maintaining a comfortable and healthy indoor environment.