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Since 1986

24/7 Emergency
Service Available

Lexington, MA, HVAC, Plumbing, Water Heater, and Generator Services

If you’re currently looking for a company to help you receive the best comfort in your home with air conditioning or heating, then you’ve come to the right place. With almost 30 years of history, Cooling Unlimited, Inc. is a family–owned and operated full–service HVAC company in the Lexington, MA area. But we offer more than great work to install, repair and maintain air conditioning and heating systems. We also have a team of licensed plumbers, provide work for water heaters, and install and service generators. Best of all, we guarantee our work 100% and are on call 24/7.

Call us today for your HVAC and plumbing needs!

Do You Need an Air Conditioner or Air Conditioning Services in Lexington, MA?

Summers in Lexington, MA can become humid and hot, but you can see that your home is always comfortable thanks to our services. At Cooling Unlimited, Inc., we aim to see that you and your family stay cool no matter how hot it may grow outside. Need installation of a new AC, or replacement for an aging one? We can do that. Is your current AC becoming a pain because of a malfunction? We’ll be there right away with repairs. We also offer regular maintenance to keep away future repairs.

Air Conditioning Tune Ups Help Maintain Efficiency

Lexington summers get hot and you want your air conditioner to do its job day in and day out during the hottest months. But at the same time, you shouldn’t have to pay an arm and a leg for the privilege. One step to preventing high bills is to schedule a quality maintenance session from the pros at Cooling Unlimited, Inc.. When applied at least once a year, it will prevent little issues like loose bolts and fittings from leeching efficiency out of your system!

We Install, Repair, and Maintain Heat Pumps

A heat pump is an excellent option to consider for home comfort, since it works as both a cooling and heating system depending on what you need. Not only do heat pumps offer this great convenience, they can help you save money during the winter with their efficient operation. Call us for installation, repairs, maintenance and other services for heat pumps.

We Provide Excellent Heating Service and Heater Installation

When cold weather blows into Lexington, MA to stay for the winter, a powerful heating system isn’t optional. You can call Cooling Unlimited, Inc. to arrange for the heating services that will protect your household against the winter chill. We offer many different heaters for installation and replacement, and you can always count on us for around–the–clock repairs if your current heater starts to fall down on the job. Talk to us about our regular heating maintenance program as well.

Count on Us for Heater Repair and Maintenance

Lexington gets extremely cold in the winter, and you need your heater to respond anytime you need it, day or night. Heating repair sessions are designed to treat specific problems and if you’re having trouble with your heater, we can solve it very quickly. But maintenance sessions, which help improve efficiency and spot problems early, can be even better and in many cases will prevent those costly breakdowns from happening in the first place. Call on Cooling Unlimited, Inc. to be there for your heater when you need us!

We Install and Service Furnaces

Furnaces are the most common type of home heating system, and our technicians know them from the inside out. Is it time for a new installation for your home, a replacement for a unit that is too worn down, or repairs and maintenance to restore a faulty furnace to full power? You only need to call us and consider it done!

Would You Like to Improve Your Indoor Air Quality?

The air in your home is probably not as free from contaminants as you would like, and that’s where indoor air quality professionals like those at Cooling Unlimited, Inc. can help you. We will find out what’s affecting your air and then come up with a solution. We work with dehumidifiers, humidifiers, air filters, air purifiers, energy recovery ventilators and much more. When you want the healthiest and freshest air for your home in Lexington, MA, just give us a call!

Call Us for Humidifier and Dehumidifier Services

A humidity imbalance in a home is a serious issue, whether the house is too dry or too damp. Either situation will make a home uncomfortable, contribute to energy wasted with the HVAC system, and cause building damage. There are easy solutions, however: simply call us to arrange to have a humidifier or dehumidifier installed. We’ll see that it keeps running for many years.

Are You Looking for a Local Plumber or Plumbing Services?

Indoor plumbing is an integral part of modern living, and plumbing systems are complicated and must receive service from the best–trained plumbers. To talk to licensed plumbers who serve Lexington, MA, dial the number for Cooling Unlimited, Inc.. We offer a wide array of plumbing services–installation, repair, replacement, maintenance, etc.–to take care of your home and family. As with our HVAC work, we provide you with a 100% satisfaction guarantee and are ready to come to your assistance 24/7.

24–Hour Emergency Plumbing Service Is Ready to Go

Emergency plumbing service wouldn’t mean much if you had to wait for hours for it to arrive. You can’t afford to sit on your hands while water spreads across your Lexington floor, or your entire household is without reliable plumbing for an entire weekend. That’s why we not only offer 24–hour emergency plumbing service anytime, but we guarantee we’ll be there in a flash, assess the problem accurately, and make high quality repairs swiftly to get your plumbing back up to speed!

We Offer Bathroom and Kitchen Plumbing Services

Most of a home’s important plumbing fixtures, taps and appliances are found in the bathroom and kitchen, and this is where you’ll most require professional plumbers. No matter if you want a new sink installed in your kitchen or a leaking toilet repaired in the bathroom, you can rely on the experience of our plumbers to do the job fast and right.

We Install Water Heaters and Offer Other Water Heater Services

You need to have a water heater in your home in Lexington, MA to take care of numerous daily tasks. Cooling Unlimited, Inc. can help with any water heater service you may require to ensure that your family always has a supply of hot water ready. We install many different types of heaters, and can replace an inefficient older one with a money–saving new unit. Contact us for repairs any time–and thanks to our maintenance services you won’t need to call for repairs often!

Do You Need Tank or Tankless Water Heater Services?

Most homes have storage tank water heaters to see to their hot water requirements, and our technicians are familiar with all the installation and other service needs for these systems. But we also offer superlative work with energy–saving and convenient tankless water heaters. To find out more about these systems, or to arrange for service, just give us a call.

Installation and Other Services for Generators in Lexington, MA

A stretch of bad weather during the storm season in Lexington, MA can often result in a neighborhood losing power for hours or even days. You can prepare for this event with installation of a whole–house generator, and Cooling Unlimited, Inc. is here to help. We also work with commercial generators for businesses. If your current generator needs maintenance to prep it for the coming season, fast repairs to restore it, or a complete replacement, you can also rely on our technicians.

Are You Looking for New Construction Project Services?

Cooling Unlimited, Inc. offers HVAC and plumbing services for new building construction. You want to make sure that your new home or commercial building has a ventilation and plumbing system that will serve it well. Inferior installation is the cause of the majority of repair issues that HVAC and plumbing can later encounter, so you want to start off right with an experienced team that will see that everything is done correctly. Call us when you need new construction HVAC and plumbing work in Lexington, MA.

We Provide Excellent Commercial Services in Lexington, MA

Cooling Unlimited, Inc. started out almost 30 years ago as a one–truck service. We’ve grown extensively and not only offer residential HVAC and plumbing services, but commercial services as well. If you own a business in Lexington, MA, you will have a difficult time locating a more experienced and capable team than ours. We’ve been family–owned and operated since the start, and you’ll appreciate the personal touch we’ll bring to whatever work your business may require for heating, cooling, and plumbing.

Local Reviews
for Lexington, MA

Rated 5.0 out of 5 stars based on 1 customer reviews


Map of Lexington, MA

Responsive Sales and Installation Teams




We chose CU because there were able to meet a hard date for the install and were very responsive to questions during the initial sales steps. The installation team showed up on time and completed on time. We did have an issue with the install related to Carrier, but the owner contacted us directly and still met our deadline.


Gina D.

Gina D.

Installation of a Carrier 17 seer 5 ton central air system.

Near Joseph Comee Rd, Lexington, MA 02420
Meghan F.

Meghan F.

Installation of a Mitsubishi 18 Seer Hyper Heat Ductless Heat Pump Condenser with 6 Mitsubishi Ductless Wall Mounted Air Handlers.

Near Rindge Ave, Lexington, MA 02420