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Heating and air conditioning pros in Ronkonkoma

Avatar for Advanced Air Conditioning, Heating, and Refrigeration, Inc
Advanced Air Conditioning, Heating, and Refrigeration, Inc
1158C Suffolk Avenue
4.43(
61
)
Approved Pro
Advanced Air Conditioning, Heating, and Refrigeration, Inc
1158C Suffolk Avenue
4.43(
61
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
43 years of experience

Advanced A/C, Heating, & Refrigeration is New York's premier HVAC contractor. With decades of experience, you can rest assured that we will get the job done right the first time, every time.

"prompt"

philip r on October 2022

Advanced A/C, Heating, & Refrigeration is New York's premier HVAC contractor. With decades of experience, you can rest assured that we will get the job done right the first time, every time.

"prompt"

philip r on October 2022


REM Construction & Technical Service
59 Frog Hollow Road
New on HomeAdvisorNew on Angi
Approved Pro
REM Construction & Technical Service
59 Frog Hollow Road
New on AngiNew on HomeAdvisor
Approved Pro
18 years of experience
Free onsite estimate

REM Construction & Technical Service Corporation is dedicated to providing professional quality work and customer service to each client we work with!

REM Construction & Technical Service Corporation is dedicated to providing professional quality work and customer service to each client we work with!


Avatar for Deer Park Ave Heating & Air Conditioning Corporation
Deer Park Ave Heating & Air Conditioning Corporation
699 Acorn Street
4.53(
51
)
Approved Pro
Deer Park Ave Heating & Air Conditioning Corporation
699 Acorn Street
4.53(
51
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
13 years of experience

Deer Park Ave Heating & Air Conditioning Corporation is a family business that offers friendly service from experienced and professional technicians. Our goal is to be the most competitive HVAC Company on Long Island without compromising our quality of work. Call us today for all your heating, air conditioning, humidification and hot water needs. Home Improvement License # - 54823-H (HVAC) Electrical Licence # - 57182-RE (HVAC) Plumbing License # - 57534-RP

"5 star"

Lisa J on June 2022

Deer Park Ave Heating & Air Conditioning Corporation is a family business that offers friendly service from experienced and professional technicians. Our goal is to be the most competitive HVAC Company on Long Island without compromising our quality of work. Call us today for all your heating, air conditioning, humidification and hot water needs. Home Improvement License # - 54823-H (HVAC) Electrical Licence # - 57182-RE (HVAC) Plumbing License # - 57534-RP

"5 star"

Lisa J on June 2022


Avatar for Energywise, Inc.
Energywise, Inc.
2231 5th Avenue
New on HomeAdvisorNew on Angi
Approved Pro
Energywise, Inc.
2231 5th Avenue
New on AngiNew on HomeAdvisor
Approved Pro
40 years of experience
Offers emergency service

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.


Avatar for DZ Electrical Contracting
DZ Electrical Contracting
509 Bicycle Path, Unit N
4.85(
411
)
Approved Pro
DZ Electrical Contracting
509 Bicycle Path, Unit N
4.85(
411
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
33 years of experience

Here at DZ Electrical Contracting, we perform complete residential, commercial services of any kind, from basic repairs, trouble shooting, to custom requests. We do repairs, upgrades and installations of all types and sizes. We are always on time and on budget, trust the people who think of your needs first every time. We're here to solve problems, not create them. Give us a call today!

"ewewaewaewa"

Dom M on October 2024

Here at DZ Electrical Contracting, we perform complete residential, commercial services of any kind, from basic repairs, trouble shooting, to custom requests. We do repairs, upgrades and installations of all types and sizes. We are always on time and on budget, trust the people who think of your needs first every time. We're here to solve problems, not create them. Give us a call today!

"ewewaewaewa"

Dom M on October 2024


Abreu’s A/C & Refrigeration
38 E Chestnut Street
New on HomeAdvisorNew on Angi
Approved Pro
Abreu’s A/C & Refrigeration
38 E Chestnut Street
New on AngiNew on HomeAdvisor
Approved Pro
5 years of experience

Abreu’s A/C & Heating Company is committed to excellence in every aspect of our business. 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 customers' interests and make their concerns the basis of our business.

Abreu’s A/C & Heating Company is committed to excellence in every aspect of our business. 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 customers' interests and make their concerns the basis of our business.


Avatar for K.N. Heating and Cooling
K.N. Heating and Cooling
170 West Marie Street
4.82(
333
)
Approved Pro
K.N. Heating and Cooling
170 West Marie Street
4.82(
333
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
16 years of experience

K.N. Heating and Cooling, proudly services consumers since 2009. With over 15 years of experience in the HVAC, our attention to detail and professionalism guarantees customer satisfaction. Our mission is to create long lasting relationships with all our customers. We offer 24 hour service in case of emergency. Call today for a free estimate! NASSAU COUNTRY LICENSE # H3642240000

"Fast response, good service."

Marge M on September 2023

K.N. Heating and Cooling, proudly services consumers since 2009. With over 15 years of experience in the HVAC, our attention to detail and professionalism guarantees customer satisfaction. Our mission is to create long lasting relationships with all our customers. We offer 24 hour service in case of emergency. Call today for a free estimate! NASSAU COUNTRY LICENSE # H3642240000

"Fast response, good service."

Marge M on September 2023


National Gas and Oil Conversions LLC
25 Woodland Ave
4.50(
4
)
Approved Pro
National Gas and Oil Conversions LLC
25 Woodland Ave
4.50(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 local quotes requested

National Gas and Oil Conversions, LLC, is committed to excellence in every aspect of our business. 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 customers' interests, and make their concerns the basis of our business.

"Bob is great to work with. Very fast and reliable. I already get him going for some upcoming works. He able to identify things that need to happen and do things correctly per building code. Highly recommend to others."

Simon C on June 2024

National Gas and Oil Conversions, LLC, is committed to excellence in every aspect of our business. 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 customers' interests, and make their concerns the basis of our business.

"Bob is great to work with. Very fast and reliable. I already get him going for some upcoming works. He able to identify things that need to happen and do things correctly per building code. Highly recommend to others."

Simon C on June 2024


Avatar for Housitive Pbc
Housitive Pbc
2247 Deerfield Road
5.00(
6
)
Approved Pro
Housitive Pbc
2247 Deerfield Road
5.00(
6
)
Approved Pro
Super Service Award
Customers say: Quick response
29 local quotes requested
2 years of experience

We are bringing our years of experience with mini-split heat pumps from Central New York to Long Island. Properly installed and maintained mini-splits are an efficient heating and cooling solution for most Long Island homes. At Housitive, we seek to serve our communities by providing the best mini-split installations and the best customer experience. We are committed to raising the bar for quality and efficiency and to creating a smooth, transparent process from first contact to completed project. We believe that mini-splits are a great choice for our homes, our communities, and our environment–and we want you to be as excited about them as we are, so we can together accelerate our transition away from fossil fuels!

"Housitive is a great company, hire Housitive to install a new heating and cooling system. I couldn't have ask for a better company to do this job. Neat and clean. Deran, John and Steven was amazing. They took their time and get the job done the right way. If you're looking for a new system look no further than Housitive great company. Tina"

Tina S on January 2025

We are bringing our years of experience with mini-split heat pumps from Central New York to Long Island. Properly installed and maintained mini-splits are an efficient heating and cooling solution for most Long Island homes. At Housitive, we seek to serve our communities by providing the best mini-split installations and the best customer experience. We are committed to raising the bar for quality and efficiency and to creating a smooth, transparent process from first contact to completed project. We believe that mini-splits are a great choice for our homes, our communities, and our environment–and we want you to be as excited about them as we are, so we can together accelerate our transition away from fossil fuels!

"Housitive is a great company, hire Housitive to install a new heating and cooling system. I couldn't have ask for a better company to do this job. Neat and clean. Deran, John and Steven was amazing. They took their time and get the job done the right way. If you're looking for a new system look no further than Housitive great company. Tina"

Tina S on January 2025


New York HVAC Corporation
PO Box 2234
4.84(
43
)
Approved Pro
New York HVAC Corporation
PO Box 2234
4.84(
43
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
13 years of experience

Thank you for visiting we have over 30 years of experience in the business. Here at New York HVAC Corporation we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! We are fully licensed and insured.

"Vinny and his son are top notch. Punctual, honest, dependable, and most importantly they do a good job. They stand behind the product and their work and supports you for the long term. They have never not answered a phone call or text. Vinny has installed multiple mini splits at our house, comes yearly for the service, and has fixed our boiler. I would highly recommend them to anyone."

Ana L on July 2024

Thank you for visiting we have over 30 years of experience in the business. Here at New York HVAC Corporation we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! We are fully licensed and insured.

"Vinny and his son are top notch. Punctual, honest, dependable, and most importantly they do a good job. They stand behind the product and their work and supports you for the long term. They have never not answered a phone call or text. Vinny has installed multiple mini splits at our house, comes yearly for the service, and has fixed our boiler. I would highly recommend them to anyone."

Ana L on July 2024

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Showing 1-10 of 991

Heating and air conditioning services FAQs

Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an uncertified HVAC pro could lead to poor quality work, costly future expenses, and potential code violations. A certified HVAC technician tackling your home projects protects you as a homeowner.

As you browse our pro listings, take note of the “Angi Certified” badge. Angi Certified businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Knowing how long your existing HVAC units can last is essential to determine if you need a repair or replacement. Typically, most modern air conditioning units can last between 15 to 20 years, and most furnaces can work properly for 15 to 30 years. If your HVAC system is on the older side and you decide to replace one unit, it might make sense to replace both simultaneously to save on costs and future hassle.

While different HVAC contractors might offer higher or lower prices than competitors, the best time to replace your HVAC system is when customer demand is low. The beginning of summer and the beginning of winter bring the most demand for HVAC systems, so if you can, consider replacing your HVAC units in the early spring or fall. Many HVAC companies offer special off-season coupons that help lower the overall cost.  

The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.

The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.  

The homeowners guide to heating and air conditioning services
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