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Avatar for Airtech Heating and Cooling, LLC

Airtech Heating and Cooling, LLC

12 Summer Island Point
4.78(
32
)
Approved Pro

Airtech Heating and Cooling, LLC

12 Summer Island Point
4.78(
32
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
14 local quotes requested

Airtech Heating and Cooling, LLC, is a New Haven locally owned and operated company that values quality in all aspects of business. The cornerstone of our service is responsiveness with professional quality guaranteed. We have over 40 years experience in the heating and cooling industry. Our services are customized to your individual needs, paying close attention to the details of your project. We look forward to gaining you as another satisfied customer.

"AirTech and Mark Miller responded by calling me almost immediately after my online inquiry to Home Advisor's for service on my gas furnace. It was on December 23rd, Saturday approximately 6pm. He came within the hour and fixed the problem with my furnace. Considering a weekend, after hours and also a holiday weekend at that, extremely reasonable price. I would use them again and I would recommend them highly, as well."

Pat H on January 2024

Airtech Heating and Cooling, LLC, is a New Haven locally owned and operated company that values quality in all aspects of business. The cornerstone of our service is responsiveness with professional quality guaranteed. We have over 40 years experience in the heating and cooling industry. Our services are customized to your individual needs, paying close attention to the details of your project. We look forward to gaining you as another satisfied customer.

"AirTech and Mark Miller responded by calling me almost immediately after my online inquiry to Home Advisor's for service on my gas furnace. It was on December 23rd, Saturday approximately 6pm. He came within the hour and fixed the problem with my furnace. Considering a weekend, after hours and also a holiday weekend at that, extremely reasonable price. I would use them again and I would recommend them highly, as well."

Pat H on January 2024


Avatar for Jermaine C Home Improvement, LLC

Jermaine C Home Improvement, LLC

115 Boston Ave
4.79(
19
)
Approved Pro

Jermaine C Home Improvement, LLC

115 Boston Ave
4.79(
19
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
344 local quotes requested

JC Home Improvement specializes in carpentry so we have great experience repairing deteriorated wood and fixing damaged sheetrock. We also remodel bedrooms, bathrooms and kitchens. Further more we take on small jobs installing household décor such as mirrors and ceiling fans and etc. We have an affordable and efficient pricing system. This system allows us to provide the best possible results for our clients and gives our clients peace of mind to make executive decisions. Jermaine Ferguson, owner of Jermaine C Home Improvement has over 15 years of experience as a carpenter and project manager. He is experienced in all areas of the services we offer. Jermaine is actively involved in each project at JC Home Improvement LLC.

"Jermaine is one of those handymen who is worth their weight in gold. I hired him and his team to perform a variety of odd jobs around my newly purchased house, and they stayed late - on a Friday afternoon no less - to successfully install appliances that Home Depot was unable to install (appliance installation was not on my original list because I didn’t think it was something Jermaine’s group did). All work Jermaine and his team did met or exceeded my expectations, and the entire time, Jermaine was focused on doing as much for me as he could. I will 100% hire Jermaine again the next time I need a handyman, and you should too."

Nick R on September 2025

JC Home Improvement specializes in carpentry so we have great experience repairing deteriorated wood and fixing damaged sheetrock. We also remodel bedrooms, bathrooms and kitchens. Further more we take on small jobs installing household décor such as mirrors and ceiling fans and etc. We have an affordable and efficient pricing system. This system allows us to provide the best possible results for our clients and gives our clients peace of mind to make executive decisions. Jermaine Ferguson, owner of Jermaine C Home Improvement has over 15 years of experience as a carpenter and project manager. He is experienced in all areas of the services we offer. Jermaine is actively involved in each project at JC Home Improvement LLC.

"Jermaine is one of those handymen who is worth their weight in gold. I hired him and his team to perform a variety of odd jobs around my newly purchased house, and they stayed late - on a Friday afternoon no less - to successfully install appliances that Home Depot was unable to install (appliance installation was not on my original list because I didn’t think it was something Jermaine’s group did). All work Jermaine and his team did met or exceeded my expectations, and the entire time, Jermaine was focused on doing as much for me as he could. I will 100% hire Jermaine again the next time I need a handyman, and you should too."

Nick R on September 2025


Avatar for Jarrett's Home Improvement LLC

Jarrett's Home Improvement LLC

PO Box 113132
4.74(
268
)
Approved Pro

Jarrett's Home Improvement LLC

PO Box 113132
4.74(
268
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
65 local quotes requested

**Please give me a call at 203-912-0442 for faster response.** Jarrett's Home Improvement is a reputable company founded in 2000 by Noel Jarrett of Stamford. He has over 20 years of experience in all skill sets relevant to the home improvement business. The principles of the company are guided by the ideals of honesty, integrity, excellent workmanship, and the highest level of customer satisfaction. Feel free to text me at 203-912-0442 as well! I look forward to speaking with you soon.

"Yes he was great"

Mary G on July 2023

**Please give me a call at 203-912-0442 for faster response.** Jarrett's Home Improvement is a reputable company founded in 2000 by Noel Jarrett of Stamford. He has over 20 years of experience in all skill sets relevant to the home improvement business. The principles of the company are guided by the ideals of honesty, integrity, excellent workmanship, and the highest level of customer satisfaction. Feel free to text me at 203-912-0442 as well! I look forward to speaking with you soon.

"Yes he was great"

Mary G on July 2023


Avatar for Agile Construction and Home Improvement

Agile Construction and Home Improvement

53 OAK ST
4.78(
45
)
Approved Pro

Agile Construction and Home Improvement

53 OAK ST
4.78(
45
)
Approved Pro
Customers say: Super punctual
187 local quotes requested
25 years of experience

With over 12 years in the construction industry, we are an owned and operated company that will get the job done right the first time. We can do big or small projects and we can work out your payment too. Our company's mission is to build relationships with our customers, so they always know who to call. We look forward to working with you, give us all call today!

"great job, done quickly and efficiently"

Mike R on October 2025

With over 12 years in the construction industry, we are an owned and operated company that will get the job done right the first time. We can do big or small projects and we can work out your payment too. Our company's mission is to build relationships with our customers, so they always know who to call. We look forward to working with you, give us all call today!

"great job, done quickly and efficiently"

Mike R on October 2025


Avatar for HARP Home Services LLC

HARP Home Services LLC

863 Marshall Phelps Rd
4.57(
444
)
Approved Pro

HARP Home Services LLC

863 Marshall Phelps Rd
4.57(
444
)
Approved Pro
Customers say: Super punctual
2325 local quotes requested
33 years of experience

We joined Angie's List in August of 2007 and have earned their Super Service Award every year since 2009 when they started that program. HARP Home Services, LLC is here to take care of all your heating and air conditioning needs. Whether you are looking for a free quote on a new central air conditioning system or are ready to install radiant floor heating or a new boiler for those chilly winter months, we're just a phone call (or e-mail) away. Residential & Commercial.

"This is the latest after HARP has been out to try and fix an AC system they installed. Mind you 4 different technicians have been to the property and none seem to have been informed on the repair or what it would take to fix it. I had another AC company come out an inspect the unit HAAP installed. This is what the report stated: ent to look at heat pump system in the apartment. Outside I found the condenser line set to be kinked, uninsulated, the wrong size and the system to already have dye added to the system so someone has tried to leak check the system. The problem with the dye is that it should never be used in a system because it contaminates the refrigerant and the oil in the unit, these actions have taken years off the operation of the unit. Inside starting at the thermostat to be wired incorrectly which may be a leading cause to why the system is running incorrectly. Also found that part of the ductwork was cut out of the way by the previous company and they did not put the duct work back together and in fact just covered the whole on the end of the duct. The line-set is wrong as it is suppose to be 3/8 3/4 line-set and it is only 1/4 1/2 line-set which leads to less life of the system and improper running of the system. In order to fix the system we would have to reclaim any refrigerant from the system and then un do the brazed connections, run line hide, drill out the building pull new thermostat wire and a new line-set between the two units, braze pull a vacuum, charge the system and then re wire the system. Also this would not insure proper running of the system because the system has already been damaged from the improper installation Task # EHR-100 RRL-160 RRL-170 LNS-110 LST-100 Description Rewire Low and/or High Voltage - Indoor Equipment : - Sometimes, an event occurs which may damage the wiring to a component in your system. There are two types: high-voltage (running motors, for example) and low voltage (usually running indoor thermostats). Repairing the damaged wiring will allow voltage to operate inside of the indoor unit. Add Initial lb of R-410A Refrigerant : - The refrigerant system is a "closed-loop system" meaning that it does not require being "topped off" like a gas tank. In fact, in most cases, the refrigerant in the system will actually last longer than the system. If the system requires additional refrigerant to be added, it usually means there is a leak in the system. It is important that the leak is located and repaired before the refrigerant is added. This is for the initial pound of refrigerant in order to start diagnosing the system, however, more may be necessary. Add R-410A Refrigerant Each Additional lb : Additional refrigerant was necessary. Refrigerant Handling Lineset - 50 Foot : The lineset is the copper tubing that connects the indoor coil for the air conditioning unit to the outdoor condensing unit. Sometimes it is possible to re-use an existing lineset. We recommend replacing the lineset where accessible. In some situations when the old unit fails it can contaminate the tubing. Reconnecting the tubing to a new system can shorten the life of the equipment. Repair Line Set : - If the line set is leaking refrigerant or has other issues, such as a kink in the line, repair may be an option, instead of replacement. includes pump down of system, pressure test, vacuum and testing the system. additional refrigerant NOT included. No one from HARP will return my calls at this point. My next step is to take them to Court to get my money back and find a reputable AC company that can perform the work and actually have technicians that know what they are doing. AVOID THIS COMPANY AT ALL cost. They are rip off artist."

Rodney J on July 2023

We joined Angie's List in August of 2007 and have earned their Super Service Award every year since 2009 when they started that program. HARP Home Services, LLC is here to take care of all your heating and air conditioning needs. Whether you are looking for a free quote on a new central air conditioning system or are ready to install radiant floor heating or a new boiler for those chilly winter months, we're just a phone call (or e-mail) away. Residential & Commercial.

"This is the latest after HARP has been out to try and fix an AC system they installed. Mind you 4 different technicians have been to the property and none seem to have been informed on the repair or what it would take to fix it. I had another AC company come out an inspect the unit HAAP installed. This is what the report stated: ent to look at heat pump system in the apartment. Outside I found the condenser line set to be kinked, uninsulated, the wrong size and the system to already have dye added to the system so someone has tried to leak check the system. The problem with the dye is that it should never be used in a system because it contaminates the refrigerant and the oil in the unit, these actions have taken years off the operation of the unit. Inside starting at the thermostat to be wired incorrectly which may be a leading cause to why the system is running incorrectly. Also found that part of the ductwork was cut out of the way by the previous company and they did not put the duct work back together and in fact just covered the whole on the end of the duct. The line-set is wrong as it is suppose to be 3/8 3/4 line-set and it is only 1/4 1/2 line-set which leads to less life of the system and improper running of the system. In order to fix the system we would have to reclaim any refrigerant from the system and then un do the brazed connections, run line hide, drill out the building pull new thermostat wire and a new line-set between the two units, braze pull a vacuum, charge the system and then re wire the system. Also this would not insure proper running of the system because the system has already been damaged from the improper installation Task # EHR-100 RRL-160 RRL-170 LNS-110 LST-100 Description Rewire Low and/or High Voltage - Indoor Equipment : - Sometimes, an event occurs which may damage the wiring to a component in your system. There are two types: high-voltage (running motors, for example) and low voltage (usually running indoor thermostats). Repairing the damaged wiring will allow voltage to operate inside of the indoor unit. Add Initial lb of R-410A Refrigerant : - The refrigerant system is a "closed-loop system" meaning that it does not require being "topped off" like a gas tank. In fact, in most cases, the refrigerant in the system will actually last longer than the system. If the system requires additional refrigerant to be added, it usually means there is a leak in the system. It is important that the leak is located and repaired before the refrigerant is added. This is for the initial pound of refrigerant in order to start diagnosing the system, however, more may be necessary. Add R-410A Refrigerant Each Additional lb : Additional refrigerant was necessary. Refrigerant Handling Lineset - 50 Foot : The lineset is the copper tubing that connects the indoor coil for the air conditioning unit to the outdoor condensing unit. Sometimes it is possible to re-use an existing lineset. We recommend replacing the lineset where accessible. In some situations when the old unit fails it can contaminate the tubing. Reconnecting the tubing to a new system can shorten the life of the equipment. Repair Line Set : - If the line set is leaking refrigerant or has other issues, such as a kink in the line, repair may be an option, instead of replacement. includes pump down of system, pressure test, vacuum and testing the system. additional refrigerant NOT included. No one from HARP will return my calls at this point. My next step is to take them to Court to get my money back and find a reputable AC company that can perform the work and actually have technicians that know what they are doing. AVOID THIS COMPANY AT ALL cost. They are rip off artist."

Rodney J on July 2023


Avatar for Tyler Heating, Air Conditioning and Refrigeration LLC

Tyler Heating, Air Conditioning and Refrigeration LLC

255 Hathaway Dr
4.64(
129
)
Approved Pro

Tyler Heating, Air Conditioning and Refrigeration LLC

255 Hathaway Dr
4.64(
129
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
713 local quotes requested

To a home or business owner in Connecticut, having an effective, efficient, and reliable HVAC system in place is vital. Our summers are hot, and the winters get plenty cold, and that means your equipment needs to be able to keep up if you intend to remain comfortable. That requires the attention and care of heating and cooling contractors that are a cut above. We strive to be absolutely exceptional in all regards! In order to do so, we offer Carrier® products as well as a customized and customer-focused approach to our services. We deliver a team that is knowledgeable, professional, friendly, and above all, one that puts you first. For complete HVAC repair, installation, and maintenance services call or message Tyler Heating, Air Conditioning, Refrigeration LLC!

"Great work from Patrick, Fred and the whole team."

Allison P on June 2025

To a home or business owner in Connecticut, having an effective, efficient, and reliable HVAC system in place is vital. Our summers are hot, and the winters get plenty cold, and that means your equipment needs to be able to keep up if you intend to remain comfortable. That requires the attention and care of heating and cooling contractors that are a cut above. We strive to be absolutely exceptional in all regards! In order to do so, we offer Carrier® products as well as a customized and customer-focused approach to our services. We deliver a team that is knowledgeable, professional, friendly, and above all, one that puts you first. For complete HVAC repair, installation, and maintenance services call or message Tyler Heating, Air Conditioning, Refrigeration LLC!

"Great work from Patrick, Fred and the whole team."

Allison P on June 2025


Avatar for R & R Heating & Cooling

R & R Heating & Cooling

169 Trumbull Ave
5.00(
17
)
Approved Pro

R & R Heating & Cooling

169 Trumbull Ave
5.00(
17
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
555 local quotes requested

R & R Heating & Cooling at your service. We have over 20 years of industry experience and provide our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. Most contractors upsell, but I do not. If it can be fixed, I will fix it. We specialize in central A/C, heating and furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. There is a 30-day warranty on all our services. We look forward to building long-term relationships with our clients and guarantee your satisfaction! **After 5pm, please leave a voicemail and we will get back to you on the same day for emergencies, or the next day for normal business requests You can also book online on our website**

"I absolutely love this company! They are so knowledgeable and efficient, with a great price! We have used them for 2 properties and will continue to hire again!"

Selina C on September 2024

R & R Heating & Cooling at your service. We have over 20 years of industry experience and provide our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. Most contractors upsell, but I do not. If it can be fixed, I will fix it. We specialize in central A/C, heating and furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. There is a 30-day warranty on all our services. We look forward to building long-term relationships with our clients and guarantee your satisfaction! **After 5pm, please leave a voicemail and we will get back to you on the same day for emergencies, or the next day for normal business requests You can also book online on our website**

"I absolutely love this company! They are so knowledgeable and efficient, with a great price! We have used them for 2 properties and will continue to hire again!"

Selina C on September 2024


Avatar for Precise HVAC Home Services

Precise HVAC Home Services

35 Wooster Court Unit D
5.00(
1
)
Approved Pro

Precise HVAC Home Services

35 Wooster Court Unit D
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1001 local quotes requested

We take great pride in offering the best possible experience with our expertise, quality, and customer service. In order to understand the needs and expectations of our clients, we make every effort to work and communicate with everyone in a professional manner. It is our mission to exceed our clients expectations by providing excellent workmanship and complete customer satisfaction, from the start of each project to its completion. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"My AC was not working Precise came out and fixed the problem . I was very pleased with the service and professionalism. I will be using for all my maintenance and repair needs."

Anna S on August 2024

We take great pride in offering the best possible experience with our expertise, quality, and customer service. In order to understand the needs and expectations of our clients, we make every effort to work and communicate with everyone in a professional manner. It is our mission to exceed our clients expectations by providing excellent workmanship and complete customer satisfaction, from the start of each project to its completion. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"My AC was not working Precise came out and fixed the problem . I was very pleased with the service and professionalism. I will be using for all my maintenance and repair needs."

Anna S on August 2024


Avatar for Agil General Construction LLC

Agil General Construction LLC

5.00(
3
)
Approved Pro

Agil General Construction LLC

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1151 local quotes requested

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business, we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Highly recommend! They were extremely responsive, delivered outstanding work, and I will definitely look forward to working with them again."

Reggie L on February 2025

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business, we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Highly recommend! They were extremely responsive, delivered outstanding work, and I will definitely look forward to working with them again."

Reggie L on February 2025


Avatar for Petro Home Services

Petro Home Services

650 Knowles Ave
4.44(
98
)
Approved Pro

Petro Home Services

650 Knowles Ave
4.44(
98
)
Approved Pro
Customers say: True professional
8054 local quotes requested
122 years of experience

With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

"Worst service I’ve ever have experienced. They wanted to sell me the product, never told me that there was an early termination fee and another penalty for an initial offer they gave me. Had double charges every month, once for the oil they provided (which they never told me they were going to provide before coming. They just came without my knowledge and then I find a high amount bill) and another for an “automatic payment” for 500 that they never could explain. The didn’t even fix this issue and it kept happening every month even after I cancelled the service. Then having to call them is a hastié for the refund of the 500. Stay away of this company"

Axel R on January 2023

With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

"Worst service I’ve ever have experienced. They wanted to sell me the product, never told me that there was an early termination fee and another penalty for an initial offer they gave me. Had double charges every month, once for the oil they provided (which they never told me they were going to provide before coming. They just came without my knowledge and then I find a high amount bill) and another for an “automatic payment” for 500 that they never could explain. The didn’t even fix this issue and it kept happening every month even after I cancelled the service. Then having to call them is a hastié for the refund of the 500. Stay away of this company"

Axel R on January 2023

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FAQs for thermostat installation and replacement projects in New Haven, CT

Smart thermostats may be worth it for many homeowners. They come with various features, including voice control and smartphone apps. Vacation mode can help lower energy usage when you’re out of town for an extended period. Alert warnings let you know about major spikes or drops in temperature. Smartphone apps can track energy usage, and smart thermostats can learn your routine over time to adjust your temperature and reduce wasted energy consumption automatically.

You typically do not need more than one smart thermostat. While it’s common to see multiple mechanical thermostats throughout a large home, multiple smart thermostats may try to override each other. This can lead to problems with the HVAC system. Ensure the unit you buy has the option for dual- or multi-zoned systems to avoid compatibility issues.

Installing a programmable or smart thermostat may save you $180 per year in utility costs. A big part of this comes from a smart thermostat’s ability to learn and adapt to your regular routines. With smartphone apps or web-based interfaces, you also have the option to control your thermostat when you’re not home.

The New Haven, CT homeowners’ guide to thermostat installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.

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