Chaves Heating and Air Conditioning, Inc. provides professional and experienced cooling services in Hudson, MA and the surrounding communities. From air conditioners to heat pumps, we are the leading company for all of your cooling needs. If you need repairs, maintenance, or a brand new system installed, the technicians at Chaves are the qualified and professional crew for the job.

We also aim to educate and inform our customers. Informed decisions are good decisions. We provide the highest quality service for your air conditioner, heat pump, ductless system and beyond.

Air Conditioning Basics

The four main components to your air conditioner are:

1. Condenser
This is the outside unit. This is where the gas from the compressor is condensed into a liquid. The gas that enters the condenser is very hot. The temperature is then lowered so that the gas can convert back to a liquid.

2. Compressor
This is inside the condenser. It circulates the pressurized refrigerant, to concentrates the heat and changes the low pressure gas to high pressure.

3. Evaporator
This is the part of the system that is inside the home. In simple language: it absorbs the heat from your home.

4. Expansion Valve
This controls the amount of refrigerant in your system.

All of these pieces are connected by a copper tube that handles refrigerant, creating the closed-loop. Heat is collected in the evaporator, sent outside to the condenser the heat is removed and the cool air is recirculated back into your home.


An Air Conditioner Doesn’t Create Cool Air
What happens in the process is actually the removal of heat from the air. Your AC uses a chemical called refrigerant to remove heat and transfer it outside. The warm air runs through the lines and coils in your unit and goes form liquid to gas and back again and in the is process the refrigerant removes the heat and transfers it elsewhere so that when the air comes out the other side it is cool.

Your AC Will Remove Humidity
Lower humidity helps the over all comfort level by making you feel cooler even if the temperature is the same.

Your Air Filter Needs to be Checked and Replaced Every 3-6 Months (depending on manufacturers recommendations)
A dirty air filter restricts your air flow which reduces efficiency, costing you money and over time can put stress on your unit and could cause a costly repair.

Maintenance, Maintenance, Maintenance
Your HVAC systems needs regular check ups to keep it running in tip top shape. Having regular annual preventative maintenance will bring you longer life and fewer breakdowns over all.

The Seasonal Energy Efficiency Ratio (SEER) measures air conditioning and heat pump cooling efficiency, which is calculated by the cooling output for a typical cooling season divided by the total electric energy input during the same time frame. A higher SEER rating means greater energy efficiency. [Trane]

At Chaves Heating and Air Conditioning, Inc. we provide all the services you need to keep your AC running in tip-top shape. Call at 877-7-CHAVES or 978-562-5309 or request service online for repairs, maintenance or new system installation.


Chaves Heating and Air Conditioning is experienced in the service, repair, and installation of heat pumps in Hudson, MA, and its surrounding area. A heat pump is a device that transfers heat from one place to another, from indoors to outdoors or from outdoors to indoors.

In the Winter, a heat pump works like a heater, extracting heat energy from outside and transferring it inside. In the Summer, the process reverses, and it will remove heat from your home and transfer it outside like an air conditioner.

Heat pumps work with a series of coils drawing energy from air, water, or the ground. In this way, they are very environmentally friendly and are the most energy-efficient way to heat and cool your home.

Installation costs are higher than with a traditional furnace or air conditioner, but the savings over time in annual energy costs make up for the difference in five to ten years.

There are 3 basic forms of heat pump available.

Air Source
An air source heat pump uses a series of coils to collect the heat from the air and transfer it inside or outside.

Water Source
A water source heat pump collects energy from water by running a series of pipes underwater and then transfers the heat in or out.

A geothermal heat pump, also known as a ground source heat pump collects energy from the earth through a series of coils and transfers that energy inside or outside.

The geography and climate around your Hudson or surrounding area home will determine the appropriate type of heat pump for you. Call us today at 877-7-CHAVES or 978-562-5309 or request service online for an evaluation.

All of the staff at Chaves Heating and Air Conditioning, Inc. is committed to finding you the perfect cooling system for your home. If you are not comfortable we are not happy. Call us today for annual maintenance, repairs or new installations. We are standing by to take your call.

Contact Us Today for Service

Serving Hudson, MA and surrounding communities

“We were very happy with the service from TJ Swanfeldt. He was able to fix our air conditioning unit very quickly. We were afraid we were going to need a new unit. We called in the morning and were serviced before 6:00 PM. We were very pleased.”

– Anthony D.

“The young man who did the service for me today was very polite, helpful, and knowledgeable. I have been using Chaves for many many years. I am always happy with this service.”

– Jean M.

“As always with this company, a very efficient, pleasant, and on-time service call, this time with a knowledgeable technician named TJ. This company simply does a good job and does it with a bit of old fashioned work ethics.”

– Len Z.

“From meeting with Nelson at the start, to Mark and his two other worker the experience was great.
Nelson provided me with valuable information that 3 other companies had not and also agreed with me about issues I felt were important.
Mark from installation is a very hard worker who communicates frequently to see where you want things placed and such. Very pleasant and answered all questions for me. Mark had a couple different guys who worked with him on different days. All polite. They clean up after themselves. There price was a bit higher than a few other companies but I felt it was worth it.”

– Cheryl C.

“I have been on a contract with Chaves for several years now for both my AC and furnace. The folks they send in for maintenance are great and very well trained in their field. I would recommend Chaves to anyone and give them a ***** rating.

Well done! Thanks!

– Mary (Betsy) Kurbs”

“We are more than pleased with the cleaning service performed this morning on our Mitsubishi Electric Cooling & Heating system. Technician, Richard Rumson, went above and beyond to make sure our unit was cleaned and working like new. He took extreme care in his operation, and worked neatly and methodically from beginning to end. Richard was very courteous, polite and carried on friendly conversation. He answered all questions and had very helpful recommendations for running the unit. His assistant, Jose Muniz was also very friendly and both left making sure everything was clean and secured. EXCELLENT SERVICE!!!”

– Peter & Ann C.

Chaves Heating & Air Conditioning provides heating, cooling, indoor air quality, commercial, and HVAC maintenance services to residents in Acton, Bolton, Clinton, Concord, Framingham, Lancaster, Leominster, Shrewsbury, Upton, Worcester, and other surrounding Massachusetts communities. Visit our service area page to learn more about how we can service you and to view the other communities in our core service area. Contact us today at 877-7-CHAVES or schedule service online.

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