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TRUSTED BY MOUNT OLIVER, PA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon342
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Mount Oliver

Avatar for AJ Heating and Air Conditioning, LLC

AJ Heating and Air Conditioning, LLC

5.00(
10
)
Approved Pro

AJ Heating and Air Conditioning, LLC

5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
46 local quotes requested

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the 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.

"They are great to work with. Honest and reliable. I would hire them again."

Debbie S on December 2024

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the 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.

"They are great to work with. Honest and reliable. I would hire them again."

Debbie S on December 2024


Avatar for Wade Heating & Cooling Inc

Wade Heating & Cooling Inc

4.61(
149
)
Approved Pro

Wade Heating & Cooling Inc

4.61(
149
)
Approved Pro
Customers say: Quality work
54 local quotes requested
43 years of experience

Wade Heating and Cooling, Inc is one of Pittsburgh Metro's leading residential and commercial HVAC contractors with the ability to handle all of your needs. We are a Lennox Dealer, but can handle all of your indoor comfort needs.

"Satisfied"

Michael C on April 2022

Wade Heating and Cooling, Inc is one of Pittsburgh Metro's leading residential and commercial HVAC contractors with the ability to handle all of your needs. We are a Lennox Dealer, but can handle all of your indoor comfort needs.

"Satisfied"

Michael C on April 2022


Avatar for Royal Plumbing, Heating and Cooling, LLC

Royal Plumbing, Heating and Cooling, LLC

5.00(
6
)
Approved Pro

Royal Plumbing, Heating and Cooling, LLC

5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Here at Royal Plumbing, Heating and Cooling LLC we are family owned & operated with over 10 years of experience. We take great pride in our expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the 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 client in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job we will treat your home or your business as we would treat our own. Give Royal Plumbing, Heating and Cooling LLC a call today, We look forward to working with you!

"Excellent service, professional. Serviced us within a day. Professional and courteous. Reasonably priced. Would hire him again for HVAC services"

Janet O on July 2022

Here at Royal Plumbing, Heating and Cooling LLC we are family owned & operated with over 10 years of experience. We take great pride in our expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the 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 client in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job we will treat your home or your business as we would treat our own. Give Royal Plumbing, Heating and Cooling LLC a call today, We look forward to working with you!

"Excellent service, professional. Serviced us within a day. Professional and courteous. Reasonably priced. Would hire him again for HVAC services"

Janet O on July 2022


Noah Patterson

New on AngiNew on Angi
Approved Pro

Noah Patterson

New on AngiNew on Angi
Approved Pro
4 years of experience
Free onsite estimate

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.Give us a call today, and we look forward to working with you!

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.Give us a call today, and we look forward to working with you!


Allegheny's Best Heating & Cooling LLC

New on AngiNew on Angi
Approved Pro

Allegheny's Best Heating & Cooling LLC

New on AngiNew on Angi
Approved Pro
9 years of experience
Free onsite estimate

Welcome to Allegheny's Best! We are the experts when it comes to residential and commercial HVAC installs and repairs. Our reputation for quality work, responsiveness and competitive pricing has been the primary factor in our success. We are committed to client satisfaction in which we serve the client from the developmental stages of a project to final completion. By early involvement in the conceptual phase of a project, we can explore all design possibilities with the client to assist in obtaining the best balance of aesthetics and budget covering all aspects. Through ongoing education, training and cutting edge technology, we bring the latest innovations to complete your project on time and within budget. Allegheny's Best welcomes the opportunity to assist you with your particular project needs. Give us a call; you'll be glad you did. We look forward to working with you!

Welcome to Allegheny's Best! We are the experts when it comes to residential and commercial HVAC installs and repairs. Our reputation for quality work, responsiveness and competitive pricing has been the primary factor in our success. We are committed to client satisfaction in which we serve the client from the developmental stages of a project to final completion. By early involvement in the conceptual phase of a project, we can explore all design possibilities with the client to assist in obtaining the best balance of aesthetics and budget covering all aspects. Through ongoing education, training and cutting edge technology, we bring the latest innovations to complete your project on time and within budget. Allegheny's Best welcomes the opportunity to assist you with your particular project needs. Give us a call; you'll be glad you did. We look forward to working with you!


Allegheny General Contracting Services LLC

New on AngiNew on Angi
Approved Pro

Allegheny General Contracting Services LLC

New on AngiNew on Angi
Approved Pro
12 years of experience
Free onsite estimate

Allegheny General Contracting Services, LLC, proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

Allegheny General Contracting Services, LLC, proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!


Avatar for Express Essential Services llc

Express Essential Services llc

5.00(
6
)
Approved Pro

Express Essential Services llc

5.00(
6
)
Approved Pro
1 years of experience
Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s 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

"The tech James installed our electric furnace for the price we were quoted for. No hidden fees, Im very satisfied,"

Mia R on September 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s 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

"The tech James installed our electric furnace for the price we were quoted for. No hidden fees, Im very satisfied,"

Mia R on September 2025


Avatar for Calfo Mechanical Contractors

Calfo Mechanical Contractors

4.62(
193
)
Approved Pro

Calfo Mechanical Contractors

4.62(
193
)
Approved Pro
Customers say: Super punctual
1165 local quotes requested
17 years of experience

The problem with most "pros"? Too many bad habits. It's easy to get swept away in the day to day monotony, even for those that call themselves "pros". When it comes to hiring a heating and cooling technician, nobody wants to deal with being treated like a sale rather than a person, the use of scare tactics instead of education, or someone who just wants to get to job done quickly instead of correctly. All our HVAC pros go through 5 years of HVAC schooling, for a total of 10,000 hours of on-the-job training. And it's not just technical training either; it's training that focuses on you, on making you feel comfortable every step of the way. We will roll out the red carpet for you, both figuratively and literally. Red Carpet Treatment During every visit to a home, we lay out an actual red carpet to prevent any additional mess. But what may be even more important than just protecting your home is making sure you feel like you've received the best in customer service.

"Responded to my request to rectify our issue and performed the work to our satisfaction "

Miles S on November 2025

The problem with most "pros"? Too many bad habits. It's easy to get swept away in the day to day monotony, even for those that call themselves "pros". When it comes to hiring a heating and cooling technician, nobody wants to deal with being treated like a sale rather than a person, the use of scare tactics instead of education, or someone who just wants to get to job done quickly instead of correctly. All our HVAC pros go through 5 years of HVAC schooling, for a total of 10,000 hours of on-the-job training. And it's not just technical training either; it's training that focuses on you, on making you feel comfortable every step of the way. We will roll out the red carpet for you, both figuratively and literally. Red Carpet Treatment During every visit to a home, we lay out an actual red carpet to prevent any additional mess. But what may be even more important than just protecting your home is making sure you feel like you've received the best in customer service.

"Responded to my request to rectify our issue and performed the work to our satisfaction "

Miles S on November 2025


Avatar for Innovative Heating and Cooling

Innovative Heating and Cooling

5.00(
8
)
Approved Pro

Innovative Heating and Cooling

5.00(
8
)
Approved Pro
Customers say: Quick response
39 local quotes requested
11 years of experience

Innovative Heating and Cooling company that offers services in all aspects of HVAC. We service existing equipment, install new equipment like boilers, furnaces, air conditioners, mini split systems, duct work, humidifiers, dehumidifiers, and air handlers. We are an owner-operated business.

"Woke up to a cold house. Innovative was great. Responded and arrived quickly. Promptly diagnosed the problem and was able to fix it in no time."

Karl V on December 2024

Innovative Heating and Cooling company that offers services in all aspects of HVAC. We service existing equipment, install new equipment like boilers, furnaces, air conditioners, mini split systems, duct work, humidifiers, dehumidifiers, and air handlers. We are an owner-operated business.

"Woke up to a cold house. Innovative was great. Responded and arrived quickly. Promptly diagnosed the problem and was able to fix it in no time."

Karl V on December 2024


Avatar for CLIMATECH INC

CLIMATECH INC

4.59(
123
)
Approved Pro

CLIMATECH INC

4.59(
123
)
Approved Pro
Customers say: Super punctual
212 local quotes requested
53 years of experience

We are a full service heating and air conditioning contractor. We have 24 hour emergency service available. We currently have approximately 100 employees and we do not use sub contractors. Please visit our website at www.climatech.com for valuable offers and financing options.

"Terrible: 1) Installer did not install as agreed upon. Line was to be placed behind wallboard. They insisted it would not fit, but I found out later when I had another HVAC company install the same units at my work office and did place lines behind wall board behind 2x4's. Be honest will ya! 2) Installer damaged a valve in condenser causing unit to leak which needed replaced. I asked for a new condenser, but Climatech refused and repaired. and warranted the repair. I would have rather had new. 3) Installer split the copper line in two places. A 2nd installer had to come out several days after install to repair and finish install. I requested a new copper line, but they again refused, but instead warranted the repairs. I again wanted new. 4) They sale the unit as most quiet in industry, but when it get's below 40 degrees outside condenser hums and struggles over condensation. The inside unit gurgles and whistles and hisses over it as well. They had a Mitsubishi person come out. Their response is unit runs normal and the operations manual states that the noise is because of condensation and won't do anything further about it. I would have not ordered the unit knowing this. They should list this before selling it. Emailing me an operations manual after the fact of install and payment is just not an acceptable response. Neither Climatech nor Mitsubishi is showing any integrity nor addressing the noise problem. I would not use either again. I am exploring legal options and trying to develop a class action legal case over false advertisement to obtain a replacement unit to eliminate the noise or refund. Very disappointing to spend the one and get this from companies such as this. Email me for more information [email protected] Look at the pictures to see how bad their install looks in a finished room over the false position of their installer."

TriBoroFederalCredit U on March 2022

We are a full service heating and air conditioning contractor. We have 24 hour emergency service available. We currently have approximately 100 employees and we do not use sub contractors. Please visit our website at www.climatech.com for valuable offers and financing options.

"Terrible: 1) Installer did not install as agreed upon. Line was to be placed behind wallboard. They insisted it would not fit, but I found out later when I had another HVAC company install the same units at my work office and did place lines behind wall board behind 2x4's. Be honest will ya! 2) Installer damaged a valve in condenser causing unit to leak which needed replaced. I asked for a new condenser, but Climatech refused and repaired. and warranted the repair. I would have rather had new. 3) Installer split the copper line in two places. A 2nd installer had to come out several days after install to repair and finish install. I requested a new copper line, but they again refused, but instead warranted the repairs. I again wanted new. 4) They sale the unit as most quiet in industry, but when it get's below 40 degrees outside condenser hums and struggles over condensation. The inside unit gurgles and whistles and hisses over it as well. They had a Mitsubishi person come out. Their response is unit runs normal and the operations manual states that the noise is because of condensation and won't do anything further about it. I would have not ordered the unit knowing this. They should list this before selling it. Emailing me an operations manual after the fact of install and payment is just not an acceptable response. Neither Climatech nor Mitsubishi is showing any integrity nor addressing the noise problem. I would not use either again. I am exploring legal options and trying to develop a class action legal case over false advertisement to obtain a replacement unit to eliminate the noise or refund. Very disappointing to spend the one and get this from companies such as this. Email me for more information [email protected] Look at the pictures to see how bad their install looks in a finished room over the false position of their installer."

TriBoroFederalCredit U on March 2022

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Heating and Air Conditioning questions, answered by experts

A frozen coil can cause permanent damage to your HVAC system and lead to costly repairs if not fixed. It can cause the unit to overheat and also cause the compressor to fail. It’s vital to turn the unit off if the coil is frozen and address the issue as soon as possible. 

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

No. Evaporator coils are designed to work with specific refrigerant types, and they are rated by what kinds of refrigerant they use. It’s indicated with an “R” code. It’s important to match your evaporator coil and refrigerant or your system will not work properly. An AC technician can tell you what type of refrigerant your system needs and what evaporator coils will work with it.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

If refrigerant levels are low, it can cause the evaporator coil to freeze up. Low freon causes a drop in pressure, which will make the coil too cold and cause moisture to freeze on the coil. Your system may be low on refrigerant because of a leak

Make sure to have maintenance performed twice a year, and contact your local HVAC technician if you suspect your system has low freon levels.

The Mount Oliver, PA homeowners’ guide to heating and air conditioning services

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