Take a break from the dog days of summer with efficient air conditioning systems
Madison’s A/C Repair Experts
Call Harker to help find an air conditioning system that’s fit for your home.
Whether your A/C unit needs a quick fix or it’s time to invest in a new central air conditioning system, Harker is here to help you keep your cool. Our HVAC technicians have been providing high-quality air conditioning services to Madison-area residents for more than 65 years. We partner with leading air conditioner manufacturers like Carrier and Mitsubishi to bring you the best, most efficient home air conditioning systems for your budget — and provide air conditioner maintenance to keep your system running smoothly. We’ll perform the work fast so you can get right back to enjoying the dog days of summer.
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Our Cooling Services
Looking to learn more about repairing or replacing your air conditioning system? Check out the Harker blog to learn about the importance of maintaining your A/C unit.
A/C installation and repair to keep your home cool and comfortable.
Heat Pumps | Cooling
An A/C unit with a heat pump can prepare your home to manage the constantly changing Wisconsin weather.
Harker offers Mitsubishi Ductless split systems for whole home air conditioning.
We Are Your Nest Elite Pro
Bring smart home technology to cool your home with Nest learning thermostat.
Air Conditioner Maintenance
Avoid costly repairs and keep your cooling system running efficiently with regular air conditioning maintenance.
Air Duct Cleaning
Improve the air quality of your home with thorough cleaning of your A/C ducts.
Cooling Advice & Tips
Keep your cooling system running at its best with these cool tips.
Learn More About A/C Maintenance
Heat Pumps and Wisconsin
Adding a heat pump to your home in Wisconsin can provide several benefits, including: 1) Heating and cooling: Heat pumps are versatile appliances that can both heat and cool your home. They work by extracting heat from the air outside and transferring it inside during the winter months, and reversing the process during the summer […]
Fall Home Energy Tips
The Sun Can Help Open up the curtains on your south facing windows during the daytime to allow the sun to heat your home. Close them at night to reduce the chill effect from cold windows. Drafty Windows Curtains or drapes can also play a role in how tight they are to the windows. The […]
Summer Saving Tips for Homeowners
Spring has been a little wetter than usual this year, and people across the country are ready for the warmth of summer. Between vacations and childcare, though, summer can also get expensive. Owning a home is a smart investment, as is renting a property, but they can also both cost you a lot if you […]
Is your Air Conditioner down or not running well? Things to check before you call for a Harker Technician
Is your air conditioner not starting? Is it not cooling very well? Try a few of the items below before you call for a technician. It may save you a few dollars. If your Air Conditioner won’t start or run at all, check these things first: 1. Be sure to check the electrical panel fuse […]
Why does it feel colder inside in the winter even though the thermostat says the temperature is the same?
It seems there are many real answers to this question. We’ll take you across the web with a few answers to this question. Answer #1 Indoor air is drier in winter, so sweat evaporates faster, cooling your skin; There may be drafts and pockets of colder air near the floor; The walls are colder and […]
The Lasting Heat and Your Air Conditioner
Extreme Heat & Your Air Conditioner – What’s the deal with your air conditioner? Air Conditioners are designed to keep your home up to 15-20 degrees cooler than the outside temperature and are sized based on regional summer temperatures. The extreme heat will cause your air conditioner to run continuously. This will not damage your […]
Benefits of a Heat Pump
Every home is different, and heating needs can fluctuate dramatically throughout the year. Typically, most areas have a peak season that demands the most from heating systems and an off-peak season when heating systems don’t need to work as hard. The “shoulder season” between the peak and off-peak seasons can vary unpredictably. You might have […]
Does UV Light Kill Corona Virus?
Ultra Violet Air Purification Even though the coronavirus(SARS-CoV-2), which has been causing the disease known as COVID-19, is taking an unsuspecting world by storm, the best thing we can do is be ready, but never afraid. Some steps can be made to prepare and fight back against this coronavirus. Give us a call to equip […]
Save Up To $500 – Federal Tax Credits
TAX CREDITS ON HVAC EFFICIENCY IMPROVEMENTS THROUGH 2020 In December 2019, Congress passed legislation that renewed the tax credits for 2020 and made them retroactive back to 2018. For qualified HVAC improvements, homeowners may be eligible to claim the federal tax credits equal to 10% of the installed costs; a maximum tax credit of $500. […]
A Guide to Your Furnace Filter
A Guide to Your Furnace Filter Your furnace, like most things in your house, needs a bit of a clean up now and then. Unlike refrigerator shelves and end tables, you can’t see when your furnace needs cleaning, at least, you can’t see the most important part of cleaning it – the filter. The filter […]
5 Benefits of a Condensing Furnace
5 Benefits of a Condensing Furnace Are you in the market for a new furnace? Have you decided to invest in building a new home and are considering your options when it comes to major appliances like your water heater and furnace? Heating technology has evolved significantly in recent years, and a new condensing furnace […]
2019 Fall HVAC Maintenance Checklist
HVAC systems endure the most punishment during the winter and summer, when property owners need to heat and cool their homes the most. Year over year, these systems wear down, parts deteriorate and fail, and performance suffers. It’s incredibly important for property owners to thoroughly check their HVAC seasons on a regular basis, and the […]
The Ultimate Snowbird Checklist
As the mercury continues to drop, many people who live in northern climes are packing their bags and heading south to places like Florida, Arizona, or South Alabama. Becoming a snowbird is the way to go for active retirees, but there’s a bit of preparation that goes into this kind of life. Your HVAC systems […]
6 Sounds Your A/C Makes and What They Might Mean
The newer your A/C system, the quieter it is. That means when it does make a noise, it’s all the more concerning. Though the noise is likely from a minor issue, those minor issues can be big problems if you ignore them. 6 A/C Sounds You Shouldn’t Ignore Here are some common noises you may […]
Understanding SEER Ratings for an Air Conditioner
If you’re shopping for a new A/C, you likely have run into a number that varies among models. This number is called the SEER rating – Seasonal Energy Efficiency Ratio – and it is measured by taking the ratio of the cooling output of an A/C over a cooling season and dividing it by the […]
Three Signs You Need A New Air Conditioner
Three Signs That Signal You Need a New A/C System Though you may not believe it, spring will eventually come, and, with it, all the cleaning and prep for ensuring your home is summer-ready. The first thing to consider on your spring to-do list, however, shouldn’t be beating the rugs. At the top of your […]
The Effects of a Dry Winter
We all know how dry winter air affects our skin. That’s why those bottles of lotion and tubes of chap stick reappear on bathroom counters and living room end tables once the winter weather arrives. But did you know that low humidity can also affect your home and the things in it? Here’s just a […]
December & January – Most Home Fires Occur
Nope, we’re not electricians over here at Harker Heating & Cooling. But it’s really important to keep our families and homes safe, not just this time of year, but always. Here’s some information on how to keep you and yours extra safe this Holiday Season. Electrical Safety Over the Holidays There may be no other […]
Weatherizing Your Home – Tips
Tips for Winterizing Your Home Whether you’re excited about the coming cooler days or already pining for summer, there’s no way to stop the seasons – Winter is coming. Kick back and binge Game of Thrones once the air gets cold, but stay ahead of the weather by winterizing your home with these strategies. Get […]
Indoor Air Quality – During the Cold Months
Keeping Your Indoor Air Quality Pure – From Winter to Spring – The Stack Effect Though indoor air quality is important any time of year, it’s crucial in winter, when we seal in allergens, dust mites, and cleaning chemicals to keep our homes warm and save energy. Unfortunately, winter makes your home or business’s air […]