When homeowners want a reliable heating or air conditioning system that they don't have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort. At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It's why we back all of our work with a 100% customer satisfaction guarantee for two years, and it's why we're always on timeguaranteed.
When homeowners want a reliable heating or air conditioning system that they don't have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort. At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It's why we back all of our work with a 100% customer satisfaction guarantee for two years, and it's why we're always on timeguaranteed.
We are dedicated to providing our clients with the very best in service, installation, and repair for all phases of your HVAC needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.
"HVAC Alliance Expert is a fantastic service provider! When I was stuck in the bitter cold with my furnace out of order, they came to help. Not only did their licensed technician promptly resolve the problem and repair my furnace, but he even went beyond that by generously explaining what happened and offering valuable advice on maintaining it. His demeanor was friendly yet professional throughout the service; you won't regret calling them for HVAC services! Highly recommend this company - don't look any further."
Charis D on March 2023
We are dedicated to providing our clients with the very best in service, installation, and repair for all phases of your HVAC needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.
"HVAC Alliance Expert is a fantastic service provider! When I was stuck in the bitter cold with my furnace out of order, they came to help. Not only did their licensed technician promptly resolve the problem and repair my furnace, but he even went beyond that by generously explaining what happened and offering valuable advice on maintaining it. His demeanor was friendly yet professional throughout the service; you won't regret calling them for HVAC services! Highly recommend this company - don't look any further."
Charis D on March 2023
Efficiency Air, Inc., has specialized in providing a variety of HVAC services to our local residents of Los Angeles and Ventura Counties, for over 25 years. Our customers' satisfaction is what determines our success, which is why our company continues to focus on the principles of quality workmanship, timely completion, competitive pricing and integrity in all business dealings. We combine knowledge and research with extensive practical experience to ensure the correct approach to your property. Thank you for your interest.
"After getting inspections and estimates from several contractors I picked Effincincy Air Inc. To perform the job. DEAN and his team were amazing .During inspection Dean was extra through in his investigation and assessment of the property, the current AC system and all aspects to watch for. They also came up with a competitive price. Installment of the new unit went smoothly, and they were very careful with my unit. I am very happy with this company and I recommend it sincerely. Petra W. -condo - Encino CA"
Petra W on June 2025
Efficiency Air, Inc., has specialized in providing a variety of HVAC services to our local residents of Los Angeles and Ventura Counties, for over 25 years. Our customers' satisfaction is what determines our success, which is why our company continues to focus on the principles of quality workmanship, timely completion, competitive pricing and integrity in all business dealings. We combine knowledge and research with extensive practical experience to ensure the correct approach to your property. Thank you for your interest.
"After getting inspections and estimates from several contractors I picked Effincincy Air Inc. To perform the job. DEAN and his team were amazing .During inspection Dean was extra through in his investigation and assessment of the property, the current AC system and all aspects to watch for. They also came up with a competitive price. Installment of the new unit went smoothly, and they were very careful with my unit. I am very happy with this company and I recommend it sincerely. Petra W. -condo - Encino CA"
Petra W on June 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 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.
"I felt valued as a customer.And I appreciated how dedicated Irwin was to installing a new unit for me and very good price"
Junjun H on June 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 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.
"I felt valued as a customer.And I appreciated how dedicated Irwin was to installing a new unit for me and very good price"
Junjun H on June 2025
Welcome to Sean Patrick HVAC, Your Trusted HVAC Contractor Serving SOCAL, CA and Surrounding Areas. For over 10 years, we’ve provided exceptional HVAC repairs, HVAC replacement, air conditioning maintenance, furnace replacement, and indoor air quality services for residential and commercial customers. Our NATE-certified technicians have the experience and expertise to correctly diagnose and repair all makes and models of HVAC systems. We offer 24/7 emergency HVAC repair service, so you’re never left in the cold or heat. As your local HVAC contractor, we provide: HVAC Repairs – Get your AC, furnace, or heat pump running again quickly with our skilled repair technicians HVAC Replacement – We replace old, inefficient HVAC systems with new top brand models properly sized for your home/business Air Conditioning Maintenance – Preventative maintenance maximizes the lifespan of your AC system Furnace Replacement – We replace broken furnaces with energy efficient new models
"spoke to Laura on a monday had my AC installed on thursday the technicians were on time and very professional.Sean answered all my questions and gave me a estimate right away.its good to know there are still contractors that take pride in there work I highly recomend SPH. "
David O on May 2025
Welcome to Sean Patrick HVAC, Your Trusted HVAC Contractor Serving SOCAL, CA and Surrounding Areas. For over 10 years, we’ve provided exceptional HVAC repairs, HVAC replacement, air conditioning maintenance, furnace replacement, and indoor air quality services for residential and commercial customers. Our NATE-certified technicians have the experience and expertise to correctly diagnose and repair all makes and models of HVAC systems. We offer 24/7 emergency HVAC repair service, so you’re never left in the cold or heat. As your local HVAC contractor, we provide: HVAC Repairs – Get your AC, furnace, or heat pump running again quickly with our skilled repair technicians HVAC Replacement – We replace old, inefficient HVAC systems with new top brand models properly sized for your home/business Air Conditioning Maintenance – Preventative maintenance maximizes the lifespan of your AC system Furnace Replacement – We replace broken furnaces with energy efficient new models
"spoke to Laura on a monday had my AC installed on thursday the technicians were on time and very professional.Sean answered all my questions and gave me a estimate right away.its good to know there are still contractors that take pride in there work I highly recomend SPH. "
David O on May 2025
If you're looking for comfort you can count on, you've found the right place! Whether you need service-and need it fast-or you're looking to replace or invest in new equipment for your home, AirTech Air Conditioning & Heating can help. Ask around... our name is well known and respected in because we care about impressing you so much that you'll want to call us next time and every time. Award-winning Air Conditioning & Heating Company including the Angie's List Super Service Award. Free estimates on replacement systems, new installations and duct cleaning/air purification. Servicing all major brands, makes and models for central and ductless/mini-split systems. Financing is available. AirTech is a participating HERO contractor.
"Air Tech was great. I would HIGHLY recommend. I initially had 2 other companies besides Air Tech come out for a replacement estimate. Price wise Air Tech was right in the middle but were doing a lot more than the other 2 quotes I got. For example they were changing the copper refrigeration lines, which the other 2 weren’t going to do. When I called the other 2 companies to add the lines in there was going to be an additional $1500-$2000 charge. I’m very pleased with this the work that was done by Air Tech"
Deanna M on January 2024
If you're looking for comfort you can count on, you've found the right place! Whether you need service-and need it fast-or you're looking to replace or invest in new equipment for your home, AirTech Air Conditioning & Heating can help. Ask around... our name is well known and respected in because we care about impressing you so much that you'll want to call us next time and every time. Award-winning Air Conditioning & Heating Company including the Angie's List Super Service Award. Free estimates on replacement systems, new installations and duct cleaning/air purification. Servicing all major brands, makes and models for central and ductless/mini-split systems. Financing is available. AirTech is a participating HERO contractor.
"Air Tech was great. I would HIGHLY recommend. I initially had 2 other companies besides Air Tech come out for a replacement estimate. Price wise Air Tech was right in the middle but were doing a lot more than the other 2 quotes I got. For example they were changing the copper refrigeration lines, which the other 2 weren’t going to do. When I called the other 2 companies to add the lines in there was going to be an additional $1500-$2000 charge. I’m very pleased with this the work that was done by Air Tech"
Deanna M on January 2024
Haven Electric and Plumbing is dedicated to delivering exceptional electrical and plumbing services tailored to meet the unique needs of each client. Our mission is to ensure reliability and quality through customized solutions, supported by a team of highly skilled and experienced technicians who are always prepared to provide outstanding service. We are committed to your satisfaction and will not consider the job complete until it meets our high standards. Our pride lies in the quality of our work and our commitment to excellent customer service. Explore the range of services we offer below, and feel free to call or click to schedule your free estimate today!
"The team did a great job! They were prompt, polite, efficient, kept me informed and left the area clean."
Robert M on August 2024
Haven Electric and Plumbing is dedicated to delivering exceptional electrical and plumbing services tailored to meet the unique needs of each client. Our mission is to ensure reliability and quality through customized solutions, supported by a team of highly skilled and experienced technicians who are always prepared to provide outstanding service. We are committed to your satisfaction and will not consider the job complete until it meets our high standards. Our pride lies in the quality of our work and our commitment to excellent customer service. Explore the range of services we offer below, and feel free to call or click to schedule your free estimate today!
"The team did a great job! They were prompt, polite, efficient, kept me informed and left the area clean."
Robert M on August 2024
Whether you need an A/C or Heater installation or repair in Los Angeles, our team of HVAC pros is here to deliver outstanding service. We're passionate about delivering an exceptional heating and air conditioning experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We're committed to serving you with quality and great value. We'll come to you, listen to your needs, and then come back to you with a logical, feasible plan that works for you. Our first-time customers continually become our long-term customers time and time again, choosing us for all the heating, AC, air ducts needs. Contact us today and see what our commitment to quality is all about! We may not be related, but you'll feel like we're family. We Service Los Angeles and surrounding areas. Call us today for a free estimate!
"they did a very good job"
Ajay R on December 2020
Whether you need an A/C or Heater installation or repair in Los Angeles, our team of HVAC pros is here to deliver outstanding service. We're passionate about delivering an exceptional heating and air conditioning experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We're committed to serving you with quality and great value. We'll come to you, listen to your needs, and then come back to you with a logical, feasible plan that works for you. Our first-time customers continually become our long-term customers time and time again, choosing us for all the heating, AC, air ducts needs. Contact us today and see what our commitment to quality is all about! We may not be related, but you'll feel like we're family. We Service Los Angeles and surrounding areas. Call us today for a free estimate!
"they did a very good job"
Ajay R on December 2020
Any residential project big or small! Small handyman services to large room additions there is nothing we can’t handle! With over 20 years of experience doing home renovations, water damage repairs, ADU’S custom woodworking, exterior and landscaping we can do it all!
"Ace Construction (Tony) provided an estimate that was reasonable, upfront and included a time frame for completion. Payments were made as the project progressed through each phase. As with any project communication between homeowner and business is vital and Tony was superb throughout the entire project. Tony has a keen eye when it came to vision and style, he provided excellent input and made great suggestions. We are very pleased with the work done by Ace Construction, Tony transformed our outdated kitchen, bathrooms and fireplace to the most current style. We always receive wonderful compliments from our house guests. Two thumbs up for Ace Construction!!"
Raymond C on August 2024
Any residential project big or small! Small handyman services to large room additions there is nothing we can’t handle! With over 20 years of experience doing home renovations, water damage repairs, ADU’S custom woodworking, exterior and landscaping we can do it all!
"Ace Construction (Tony) provided an estimate that was reasonable, upfront and included a time frame for completion. Payments were made as the project progressed through each phase. As with any project communication between homeowner and business is vital and Tony was superb throughout the entire project. Tony has a keen eye when it came to vision and style, he provided excellent input and made great suggestions. We are very pleased with the work done by Ace Construction, Tony transformed our outdated kitchen, bathrooms and fireplace to the most current style. We always receive wonderful compliments from our house guests. Two thumbs up for Ace Construction!!"
Raymond C on August 2024
Eskimo Air Is Celebrating 30 Years In Business . No job Is To Big Or Small We Do It All Sales Service Installations Please Call 626-945-7930 ESKIMO AIR CONDITIONING IS DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME OR BUSINESS. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS AND SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME.
"Repairman didn't clean up after this one"
Norma H on October 2024
Eskimo Air Is Celebrating 30 Years In Business . No job Is To Big Or Small We Do It All Sales Service Installations Please Call 626-945-7930 ESKIMO AIR CONDITIONING IS DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME OR BUSINESS. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS AND SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME.
"Repairman didn't clean up after this one"
Norma H on October 2024
If you’re replacing an old AC system with a new unit, you can usually clean and repair the old ductwork without having to conduct a full replacement. Cleaning HVAC ducts typically costs around $400, while repairs range from $200 to $1,000. In contrast, installing new ductwork can range from $1,000 to $5,000, making it far more costly than cleaning or fixing existing ducts. HVAC installation costs an average of $7,000 to replace a full system, so staying on top of maintenance and repairs is important.
AC cost efficiency depends on the size of your space and your long-term plans for your home. If you only need to cool a small area, a portable AC unit has a low upfront cost. Heat pumps are typically the most cost-effective option if you want to cool an entire home or improve the resale value. They provide strong cooling while being energy-efficient, which saves you money on your utility bills compared to most other AC types.
Installing a central AC unit typically takes four to eight hours if your home already has ductwork in place. However, if new ductwork needs to be installed, this can add another one to two days of labor to your project.