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Find Thermostat installers and replacers in Raritan

Avatar for Harmonair, LLC

Harmonair, LLC

3 Hanover Avenue
4.96(
24
)
Approved Pro

Harmonair, LLC

3 Hanover Avenue
4.96(
24
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

Residential Heating and Air Conditioning Company servicing the State of New Jersey. Giving you the comfort you need with affordable repairs, installations and service to your heating and cooling system/s. Integrity is key in this company and we look foward to earning your business!

"Sincere, experienced in HVAC systems, good price, timely execution and good job"

Nick M on November 2023

Residential Heating and Air Conditioning Company servicing the State of New Jersey. Giving you the comfort you need with affordable repairs, installations and service to your heating and cooling system/s. Integrity is key in this company and we look foward to earning your business!

"Sincere, experienced in HVAC systems, good price, timely execution and good job"

Nick M on November 2023


Avatar for North Crest, LLC

North Crest, LLC

35 Sherman Ave
4.98(
45
)
Approved Pro

North Crest, LLC

35 Sherman Ave
4.98(
45
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
5 years of experience

North Crest LLC is committed to excellence in every aspect of our electrical business. While we are relatively new in business, we have been doing many aspects of electrical work for over 30 years. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests, and make their concerns the basis of our business. Please call to set up an appointment and allow us to earn your business. North Crest, LLC is licensed and permitted in New Jersey. We are also Licensed in Rockland County, New York.

"Great job! Very professional and a pleasure to do business with. We’d definitely use his services again."

Aviv W on March 2025

North Crest LLC is committed to excellence in every aspect of our electrical business. While we are relatively new in business, we have been doing many aspects of electrical work for over 30 years. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests, and make their concerns the basis of our business. Please call to set up an appointment and allow us to earn your business. North Crest, LLC is licensed and permitted in New Jersey. We are also Licensed in Rockland County, New York.

"Great job! Very professional and a pleasure to do business with. We’d definitely use his services again."

Aviv W on March 2025


Avatar for J&M Cooling/Heating, LLC

J&M Cooling/Heating, LLC

14 Spielman Road
4.74(
21
)
Approved Pro

J&M Cooling/Heating, LLC

14 Spielman Road
4.74(
21
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
19 years of experience

J&M Cooling/Heating, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity, bound by fairness, honesty, and responsibility for all of our jobs. There is no job to big or too small for J&M Cooling/Heating, LLC. Here at J & M we are dedicated to customer satisfaction. We are proud to provide the highest quality service to our customers with over 35 years of experience. We have knowledge and training in numerous aspects in this field to meet all of your HVAC needs. Owner operated and family run, we aim to please all our valued customers. Please give us a call for a free estimate today!

"J&M Cooling and Heating is an example of a very well run service company. Their staff is well trained and polite. Their prices are competitive. Their office follows up when the job is completed with a phone call to make sure we are pleased and is there anything we need. We highly recommend them! Natalie and Richard Peck, North Caldwell."

Natalie and Richard P on March 2024

J&M Cooling/Heating, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity, bound by fairness, honesty, and responsibility for all of our jobs. There is no job to big or too small for J&M Cooling/Heating, LLC. Here at J & M we are dedicated to customer satisfaction. We are proud to provide the highest quality service to our customers with over 35 years of experience. We have knowledge and training in numerous aspects in this field to meet all of your HVAC needs. Owner operated and family run, we aim to please all our valued customers. Please give us a call for a free estimate today!

"J&M Cooling and Heating is an example of a very well run service company. Their staff is well trained and polite. Their prices are competitive. Their office follows up when the job is completed with a phone call to make sure we are pleased and is there anything we need. We highly recommend them! Natalie and Richard Peck, North Caldwell."

Natalie and Richard P on March 2024


Avatar for Martin S. Genser

Martin S. Genser

670 Norman Place
4.88(
32
)
Approved Pro

Martin S. Genser

670 Norman Place
4.88(
32
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

To let you know that I beat cancer in my bladder and I am ready to work again. At Martin S. Genser, LLC. we offer you over 25 years experience in the field of HVAC and home improvements. We work clean and neat. "Treating your Home as if it were Our own." We offer emergency service, full repair service, equipment replacement service, or complete new installations. We are fully insured, licensed and look forward to working with you. Please feel free to give us a call any time day or night, there is no additional charge for emergency service. Aside from doing HVAC, we also do home improvements and complete renovations such as basements, bathrooms, kitchens, ceramic tile, painting, pressure washing of decks, and anything else you may think of under your roof. If you are tired of paying too much and being taken over the coals, why not give us a call. . . . . . . . . . . . . . . . . . . . . . . . . . . . Thanks for your time.

"We had problems with our furnace and he explained as to what the problem was and came back the next day and work was done . Greatly recommend him ."

Joyce M on December 2020

To let you know that I beat cancer in my bladder and I am ready to work again. At Martin S. Genser, LLC. we offer you over 25 years experience in the field of HVAC and home improvements. We work clean and neat. "Treating your Home as if it were Our own." We offer emergency service, full repair service, equipment replacement service, or complete new installations. We are fully insured, licensed and look forward to working with you. Please feel free to give us a call any time day or night, there is no additional charge for emergency service. Aside from doing HVAC, we also do home improvements and complete renovations such as basements, bathrooms, kitchens, ceramic tile, painting, pressure washing of decks, and anything else you may think of under your roof. If you are tired of paying too much and being taken over the coals, why not give us a call. . . . . . . . . . . . . . . . . . . . . . . . . . . . Thanks for your time.

"We had problems with our furnace and he explained as to what the problem was and came back the next day and work was done . Greatly recommend him ."

Joyce M on December 2020


Avatar for Ray's HVAC

Ray's HVAC

2333 Morris Avenue
4.81(
203
)
Approved Pro

Ray's HVAC

2333 Morris Avenue
4.81(
203
)
Approved Pro
Customers say: True professional
138 local quotes requested
19 years of experience

With 25 years experience in the HVAC industry call Ray's HVAC directly @ 201-780-3062 for your industry expert in Northern/ middle New Jersey. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home or Buisness as we would treat our own.

"Ray service was professional and answered all my questions. Would definitely hire them again. And the price was reasonable. "

Marisol M on September 2025

With 25 years experience in the HVAC industry call Ray's HVAC directly @ 201-780-3062 for your industry expert in Northern/ middle New Jersey. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home or Buisness as we would treat our own.

"Ray service was professional and answered all my questions. Would definitely hire them again. And the price was reasonable. "

Marisol M on September 2025


Avatar for DMG HVAC LLC

DMG HVAC LLC

8 Oakwood Village
4.33(
6
)
Approved Pro

DMG HVAC LLC

8 Oakwood Village
4.33(
6
)
Approved Pro
4 years of experience
Free onsite estimate

DMG Services is a leading tree company based in Flanders, NJ, USA. With years of experience and a commitment to excellence, we provide top-quality tree services to residential and commercial clients.

DMG Services is a leading tree company based in Flanders, NJ, USA. With years of experience and a commitment to excellence, we provide top-quality tree services to residential and commercial clients.


Princeton Electrical Makeover, LLC

3490 US-1 Bldg.16 Suite 101
4.72(
58
)
Approved Pro

Princeton Electrical Makeover, LLC

3490 US-1 Bldg.16 Suite 101
4.72(
58
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
15 local quotes requested

Princeton Electrical Makeover, LLC has provided the Princeton, New Jersey area with outstanding electrical service. We specialize in many types of electrical work. Our mission is to provide excellent customer service and professionalism for all of our customers. We try and exceed every customer expectation regarding our quality of service. Please contact us today!

"Excellent"

Shash K on August 2024

Princeton Electrical Makeover, LLC has provided the Princeton, New Jersey area with outstanding electrical service. We specialize in many types of electrical work. Our mission is to provide excellent customer service and professionalism for all of our customers. We try and exceed every customer expectation regarding our quality of service. Please contact us today!

"Excellent"

Shash K on August 2024


Avatar for Alpine Heating and Cooling

Alpine Heating and Cooling

125 Hillside Ave
4.69(
235
)
Approved Pro

Alpine Heating and Cooling

125 Hillside Ave
4.69(
235
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
644 local quotes requested

Alpine is a fourth-generation, family-owned business proudly serving Central NJ as the region’s premier air conditioning and heating company for more than five decades. We specialize in HVAC repairs, system replacements, and ongoing maintenance. Custom HVAC Solutions: We design systems specifically for your home’s size and your financial goals, with robust rebates, reduced utility bills and 0% financing available for up to 7 years. Honest, Skilled Technicians: Our licensed, fully trained technicians are focused on fixing the problem, not upselling you on unnecessary equipment or services. Seasonal Tune-Ups & Protection Plans: Keep your system running efficiently with seasonal tune-ups and take advantage of our service contracts for year-round peace of mind. Beyond Heating & Cooling: We also install hot water heaters, indoor air quality solutions like humidifiers and air cleaners, as well as generators and sump pumps to keep your home protected in emergencies.

"Alpine installed my Trane heating and air conditioning system 18 years ago. At that time, I decided to purchase a service contract that would allow me to receive 2x a year cleaning and inspection. It was the best investment I could have made! Today their technician Troy came to conduct the preseason service on my air conditioner. My appointment was for 10am and Troy arrived promptly at 10am! During the course of the inspection, Troy discovered that the dual run capacitor was leaking oil. He showed me the part and suggested that it could be a problem down the road. Since the system is 18 years old, I wasn't surprised that there might be a worn part that would need to be replaced. Luckily, he had the part on hand and was able to do the repair right away. Because I had the service contract, I received a discount on the parts and labor which was greatly appreciated. I'm so glad that I called Alpine all those years ago. I highly recommend them for your heating and cooling needs!"

Claudia K on June 2025

Alpine is a fourth-generation, family-owned business proudly serving Central NJ as the region’s premier air conditioning and heating company for more than five decades. We specialize in HVAC repairs, system replacements, and ongoing maintenance. Custom HVAC Solutions: We design systems specifically for your home’s size and your financial goals, with robust rebates, reduced utility bills and 0% financing available for up to 7 years. Honest, Skilled Technicians: Our licensed, fully trained technicians are focused on fixing the problem, not upselling you on unnecessary equipment or services. Seasonal Tune-Ups & Protection Plans: Keep your system running efficiently with seasonal tune-ups and take advantage of our service contracts for year-round peace of mind. Beyond Heating & Cooling: We also install hot water heaters, indoor air quality solutions like humidifiers and air cleaners, as well as generators and sump pumps to keep your home protected in emergencies.

"Alpine installed my Trane heating and air conditioning system 18 years ago. At that time, I decided to purchase a service contract that would allow me to receive 2x a year cleaning and inspection. It was the best investment I could have made! Today their technician Troy came to conduct the preseason service on my air conditioner. My appointment was for 10am and Troy arrived promptly at 10am! During the course of the inspection, Troy discovered that the dual run capacitor was leaking oil. He showed me the part and suggested that it could be a problem down the road. Since the system is 18 years old, I wasn't surprised that there might be a worn part that would need to be replaced. Luckily, he had the part on hand and was able to do the repair right away. Because I had the service contract, I received a discount on the parts and labor which was greatly appreciated. I'm so glad that I called Alpine all those years ago. I highly recommend them for your heating and cooling needs!"

Claudia K on June 2025


Avatar for Valairco

Valairco

1013 Kennedy Blvd
4.74(
211
)
Approved Pro

Valairco

1013 Kennedy Blvd
4.74(
211
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
187 local quotes requested

50 YEARS STRONG! In 1968 Richard J. Valenti established Valairco with the assistance of his father Joseph R. Valenti. He continues to be active in marketing and as controller of the company. His nephew Kevin J. McHugh is the current owner and will continue to offer its customers VALUE and INTEGRITY in this FAMILY OWNED business. VALAIRCO has made it their mission to provide top quality, AFFORDABLE heating and cooling services in Somerset County. Whether you need heating or air conditioning maintenance, repair or replacement, water heater replacement or new indoor air quality system installation you can always depend on FREE ESTIMATES and work performed by HIGHLY TRAINED service technicians. Named Angie’s List super service award winner for the last 4 years. COMFORT PLUS WARRANTY: All heating and air conditioning installations come complete with their exclusive comfort plus warranty program. Besides the manufacturer’s warranty Valairco extends a full 5-year warranty covering all labor and material expenses and includes 1 heating and or cooling inspection per year for the full 5-year term. VALAIRCO CARES! HELP US GIVE BACK! Valairco is celebrating 50 years and wants to give back by donating $500 to a nonprofit or charity based on the desire of its customers, friends and interested parties. Valairco will be donating to four different charities or nonprofits approximately every three months during their 50th year celebration. Anyone can nominate a charity or nonprofit of their choice by going to www.valairco.com. Once you are on the site click onto Valairco Cares and submit your nomination. Voting will cease as of April 30, 2019 for the winner of the first donation. The results will be posted on their website and everyone who voted will get an email of the results and a thank you for helping their Valairco Cares program. For more information on our Valiarco Cares program: https://drive.google.com/drive/folders/1-bIqGvig6Zhk4m03t-D6amlhrXnugEuC?usp=sharing

"They did a nice quick Job."

James C on February 2024

50 YEARS STRONG! In 1968 Richard J. Valenti established Valairco with the assistance of his father Joseph R. Valenti. He continues to be active in marketing and as controller of the company. His nephew Kevin J. McHugh is the current owner and will continue to offer its customers VALUE and INTEGRITY in this FAMILY OWNED business. VALAIRCO has made it their mission to provide top quality, AFFORDABLE heating and cooling services in Somerset County. Whether you need heating or air conditioning maintenance, repair or replacement, water heater replacement or new indoor air quality system installation you can always depend on FREE ESTIMATES and work performed by HIGHLY TRAINED service technicians. Named Angie’s List super service award winner for the last 4 years. COMFORT PLUS WARRANTY: All heating and air conditioning installations come complete with their exclusive comfort plus warranty program. Besides the manufacturer’s warranty Valairco extends a full 5-year warranty covering all labor and material expenses and includes 1 heating and or cooling inspection per year for the full 5-year term. VALAIRCO CARES! HELP US GIVE BACK! Valairco is celebrating 50 years and wants to give back by donating $500 to a nonprofit or charity based on the desire of its customers, friends and interested parties. Valairco will be donating to four different charities or nonprofits approximately every three months during their 50th year celebration. Anyone can nominate a charity or nonprofit of their choice by going to www.valairco.com. Once you are on the site click onto Valairco Cares and submit your nomination. Voting will cease as of April 30, 2019 for the winner of the first donation. The results will be posted on their website and everyone who voted will get an email of the results and a thank you for helping their Valairco Cares program. For more information on our Valiarco Cares program: https://drive.google.com/drive/folders/1-bIqGvig6Zhk4m03t-D6amlhrXnugEuC?usp=sharing

"They did a nice quick Job."

James C on February 2024


Avatar for Good Tidings Plumbing Heating and Cooling

Good Tidings Plumbing Heating and Cooling

1225 Westfield Ave.
4.34(
73
)
Approved Pro

Good Tidings Plumbing Heating and Cooling

1225 Westfield Ave.
4.34(
73
)
Approved Pro
Customers say: Super punctual
1267 local quotes requested
34 years of experience

Local, Trusted & Family Owned for over 34 Years • 24/7 emergency service • Same Day Emergency Service & Installation • Servicing All Brands • 0% Financing Available • Fully Stocked Plumbing & HVAC Truck • Professional & trustworthy Technicians • Fully Licensed & Insured • 96% Of Our Customers Give Us A 5-Star Rating • Our Triple Play starting at only $89 includes: Heating or AC Tune Up, Water Heater Flush, & Sump Pump Check

"Appointment made for day requested. That day received early reconfirmation, then received call when plumber 20 minutes away. Upon arrival Ian explained options available, and possible procedures. He was professional, friendly, and cleaned everything up before leaving."

Bert M on December 2024

Local, Trusted & Family Owned for over 34 Years • 24/7 emergency service • Same Day Emergency Service & Installation • Servicing All Brands • 0% Financing Available • Fully Stocked Plumbing & HVAC Truck • Professional & trustworthy Technicians • Fully Licensed & Insured • 96% Of Our Customers Give Us A 5-Star Rating • Our Triple Play starting at only $89 includes: Heating or AC Tune Up, Water Heater Flush, & Sump Pump Check

"Appointment made for day requested. That day received early reconfirmation, then received call when plumber 20 minutes away. Upon arrival Ian explained options available, and possible procedures. He was professional, friendly, and cleaned everything up before leaving."

Bert M on December 2024

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FAQs for thermostat installation and replacement projects in Raritan, NJ

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 Raritan, NJ 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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