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Comprehensive Residential & Commercial HVAC, Plumbing & Pipefitting, Construction, and Building Automation Services

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Who we are

About Dual Temp

Dual Temp Company is a trusted mechanical contracting firm based in Allentown, Pennsylvania, proudly serving Eastern Pennsylvania and New Jersey since 1970. We specialize in commercial HVAC systems, industrial plumbing, and advanced building automation solutions. Our expert team also provides high-quality residential HVAC services through our dedicated division, Dual Temp Home Services.

With over 50 years of experience, Dual Temp is known for delivering cost-effective, energy-efficient mechanical solutions tailored to the needs of commercial, industrial, institutional, and residential clients. Our commitment to excellence, cutting-edge technology, and reliable service makes us a top choice for HVAC installation, plumbing systems, building controls, and preventative maintenance in the Lehigh Valley and beyond.

Whether you’re upgrading existing systems or planning new construction, Dual Temp offers the expertise and proven results to keep your building running efficiently and comfortably.

Dual Temp Company has served Eastern Pennsylvania and New Jersey since 1970 as a trusted mechanical contractor specializing in commercial HVAC, industrial plumbing, and building automation. Based in Allentown, we also provide residential services through Dual Temp Home Services. With over 50 years of experience, we deliver cost-effective, energy-efficient solutions for commercial, industrial, and residential clients throughout the Lehigh Valley. From installations to preventative maintenance, we keep your building running efficiently and comfortably.

EXPERIENCE & EXPERTISE
COMPREHENSIVE SERVICES
COMMITMENT TO QUALITY
what we do

Our Services

We offer a wide range of services, including air conditioning, heating, piping, plumbing, pipefitting, building automation controls, and boiler or chiller repair. We serve a variety of facilities across Pennsylvania and New Jersey, from commercial buildings to industrial plants and institutional facilities. Our team is always innovating and finding ways to save you money and energy, ensuring that all your mechanical needs are met with the highest level of quality and reliability. Dual Temp Home Services provides residential HVAC solutions to keep your home cozy all year round.

We provide air conditioning, heating, plumbing, pipefitting, building automation, and boiler/chiller repair across Pennsylvania and New Jersey. From commercial buildings to industrial plants, our team delivers innovative, cost-effective solutions that save energy while ensuring quality and reliability. Dual Temp Home Services handles all residential HVAC needs to keep homes in the Lehigh Valley comfortable year-round.

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Home Services

Dual Temp Home Services provides heating, cooling, and hot water solutions throughout the Lehigh Valley. Our certified technicians handle installations, repairs, smart thermostats, and air quality upgrades to keep your home comfortable year-round.

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Commercial Services

We deliver comprehensive HVAC, plumbing, and mechanical solutions for commercial buildings across Eastern Pennsylvania and New Jersey. From boilers to medical gas systems, we focus on energy efficiency and reliable operation.

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Construction Services

Our design-build team handles mechanical, HVAC, and plumbing systems for commercial and industrial construction projects. We work with owners and contractors to deliver high-performance solutions on time and on budget.

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Building Automation

We design intelligent systems that optimize lighting, temperature, and climate for improved comfort and energy efficiency. Our solutions range from simple controls to integrated smart building platforms.

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How We’re Doing

What Our Customers Are Saying

At Dual Temp, we pride ourselves on delivering exceptional HVAC solutions to businesses across the region. Our commitment to quality, prompt response times, and deep industry knowledge have earned us the trust and satisfaction of numerous clients. Discover why businesses choose Dual Temp for their commercial HVAC needs.

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Patrick Boyle, my Technician, went above and beyond to complete my furnace tuneup to my Total Satisfaction. From the text to inform me that he was on his way, to a follow-up phone call to explain what work was preformed. This was my first time using Dual Temp, And they are now the ONLY HVAC company that I will ever use! Thanks Patrick…. And Dual Temp.

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Patrick was very professional in his time at my house. Went over my system to troubleshoot the issues I was having with my ac unit. Gave me a great description of what happened and options to repair. He also found an issue with my propane water heater that was a potential safety concern and I was able to get that resolved. It was still under warranty from our plumber so with Patrick find he was able to solve the issue. It was lucky I made the call to Dual Temp for Service.

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Patrick Boyle was awesome, straightforward and right to the point. That we didn’t follow through with the plan we knew exactly where we stood with Patrick and Dual Temp . Thank you, Ralph

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Wow, what a great experience! I had Dual Temp install a Tankless Hot Water Heater in my home. The entire experience and crew was tip top from 1st inquiry call to final install. Dual Temp was professional, experienced, respectful of my home and they worked really hard to make everything PERFECT.. They did such a great job, now i even gained closet space where the old hot water heater was!!! Thank you Dual Temp, I look forward to recommending you to my friends and family. Thanks again!!

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Very good service. Very reasonable and explains all issue and problems well. Very thorough and caught extra stuff

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Joe came over to give me an estimate on a new boiler. He was very professional and knowledgeable. He explained my options and answered all the questions that I had I feel it was a very productive meeting and I walked away feeling comfortable.

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Patrick Was quick professional and very knowledgeable and efficient

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Patrick is amazing. So is the entire dual temp team. They really take their customer service to the level of extraordinary. I highly recommend dual temp for any and all HVAC needs. So happy they are doing residential now. Just amazing updated June 2025

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David D'Agostino was very thorough, professional and knowledgeable about my furnace and heat pump. He explained about the failed part, gave me the option to replace or wait. Great service call. I will have Dual Temp and hopefully, David, for future maintenance.

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Fantastic service, very friendly, prompt.. overall they're just fantastic! Highly recommend!

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We have only been working with Dual Temp for approximately two months, but we cannot say enough good things about them. Our commercial building has a unique HVAC system, to say the least, and we have already had several occasions on which we have had to make service requests. Dual Temp responds to calls and emails quickly and keeps the customer updated of progress. Nate and his great team of techs—specifically, Noah, Jeff, Bill and the other Noah—are all knowledgeable and very relatable when sharing information and options. It was a very lucky day for us when we connected with Bob, our Dual Tech salesperson, who is diligent about keeping in touch to ensure our needs are being met. Dual Temp now has our finicky HVAC equipment up and running, and we are most appreciative!

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Patrick was very helpful. He told us exactly was he was doing and what was going on with our system. I would recommend Dual Temp for your home services needs.

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Needed a new heating/ac system installed. Received a few estimates and had a friend refer me to Dual Temp because she had a great experience. Joe came out promptly and provided us with 4 options. Very knowledgeable in helping with our unique situation. Installation was prompt and quick. The young men who came out were extremely professional and very considerate. Would highly recommend them!

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Very professional and highly qualified. Worked on my commercial freezer and fixed a long time problem no one else has. Highly recommend and thanks!!!!

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Joe was prompt, professional & helpful! His communication skills are excellent & I appreciate the organization of his work flow. Very glad we were referred to him!

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We will definitely use Dual Temp again. From Joe doing the estimate to Patrick installing new baseboard heat registers they were friendly, professional and we were very happy with the price. Patrick did a great job, so happy we chose them!

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I have the joy of working with the Dual Temp home services team on a regular basis. From Patrick in service, to David and Shawn in install, to Joe and Kim in the office, I can tell you these guys are truly top notch in their trade and even better human beings. They genuinely care for their customers and demonstrate it every day.

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Patrick was able to fix our furnace issue, including locating the spare parts at an acceptable price level. I appreciate the professionalism and quality of service. Thank you

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I can’t say enough good things about our experience with Dual Temp. After several issues with our AC over the last several months it was determined that it was time to start looking for a new system. I called on a Friday morning to request a quote. They were able to have someone come out the same day. Joe was great. He was very nice and answered my husband’s questions as well as address a concern we had with air flow to our bedroom due to a smashed piece of ductwork that’s been that way apparently since the house was built. I had an estimate in my email around 5 PM that same evening. We were provided with 3 options in the quote. Sort of a good, better, best option. We had a few additional questions which I emailed Joe about and he was very quick and responsive to my questions. After getting one other quote from another company we decided to go with Dual Temp. After only 2 weeks from the initial quote our new system was installed this week. Patrick and David were the technicians that came to install and they were just as amazing to work with. They were polite, knowledgeable and explained the system and new thermostat very well. I am not one to typically write reviews but I do read them while doing my research. I can only suggest that you give them a chance at addressing your needs. Thanks again for the great service. I look forward to the same great service in the future for routine maintenance as needed.

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We are pleased to post the exceptional experience we received from DUAL TEMP today. From the initial contact with Kim , who professionally and promptly dispatched a skilled tech named Patrick. Between these two 5star team players , our HVAC issue was resolved in a timely manner and at a reasonable rate. We’re definitely going to be repeat customers and highly recommend them.

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Our furnace decided to give us a problem and stop working on one of the coldest days of the year!!! I frantically called/left messages with numerous HVAC companies who either couldn’t help us because we weren’t regular customers or couldn’t get to us for at least two days! Our technician David returned my call, got info he needed to see if he could help and got back to me immediately to say he had the part and could be here in 30 minutes. He was extremely knowledgeable, professional and polite. Our furnace was repaired quickly and kicking out heat again. Price was also much lower than others for emergency call. We are very pleased and highly recommend.

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The technicians that came today were professional and explained the problem clearly. We are looking forward to implementing the new system.

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Great pricing and quick response time with work finished early. The crew was courteous, communicative, and extremely helpful. It was a pleasure doing business with Dual Temp. 5 ⭐️

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David called to ask if he could arrive a little earlier than he was expected. He was coming to do my routine yearly service on my furnace. Once he was there he did an excellent job and I would definitely recommend Dual Temp!

Where we work

Our Service Area

Dual Temp proudly serves homeowners and businesses across a wide region. Our Home Services team covers the Greater Lehigh Valley, delivering expert HVAC repairs, installations, and maintenance with fast, friendly service. For Commercial HVAC, Construction Services, and Building Automation, we operate throughout Eastern Pennsylvania and New Jersey, providing innovative solutions for complex systems in healthcare, education, manufacturing, and beyond. No matter the project size, we’re committed to comfort, efficiency, and long-term reliability across every zip code we serve.

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