We are 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.
"Our AC broke down during the hottest week of the year. We decided to replace it proactively as it was old. Tony and his crew took care of everything next day. Highly recommend."
Tim K on September 2022
We are 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.
"Our AC broke down during the hottest week of the year. We decided to replace it proactively as it was old. Tony and his crew took care of everything next day. Highly recommend."
Tim K on September 2022
With over 10 years of experience in the HVAC industry, Omni Air HVAC is your industry expert in Orange and LA Counties. 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 veteran owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!
"Friendly."
Alexandra W on June 2022
With over 10 years of experience in the HVAC industry, Omni Air HVAC is your industry expert in Orange and LA Counties. 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 veteran owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!
"Friendly."
Alexandra W on June 2022
Delta Air Inc has successfully been in the HVAC business for well over two years. We work closely with our customers to ensure every project of theirs is complete to their satisfaction. No matter the job too big or small. All projects are completed on time, and detailed oriented. If you are in need of a professional who knows how to get the job done right the first time don't hesitate contact your local professional today!
Delta Air Inc has successfully been in the HVAC business for well over two years. We work closely with our customers to ensure every project of theirs is complete to their satisfaction. No matter the job too big or small. All projects are completed on time, and detailed oriented. If you are in need of a professional who knows how to get the job done right the first time don't hesitate contact your local professional today!
Chiller Service 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 customer's interests, and make their concerns the basis of our business.
Chiller Service 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 customer's interests, and make their concerns the basis of our business.
With more than 40 yrs of experience, Orange Air is dedicated to providing our customers with the best quality at a great price. Our home is in Southbay, we offer services custom tailored for the homes in our area. Everything from 60 year old floor furnace rebuilds to state of the art cooling systems. We specialized in the diversity of the home in our service area. WE OFFER LIFETIME WARRANTIES ON OUR RESIDENTIAL REPAIRS. As long as you own your home, our repairs are covered for life! We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!
"Gordon is very experienced and knowledgeable. He provided very helpful information and knew what needed to be done in order to resolve our issue."
Todd W on June 2025
With more than 40 yrs of experience, Orange Air is dedicated to providing our customers with the best quality at a great price. Our home is in Southbay, we offer services custom tailored for the homes in our area. Everything from 60 year old floor furnace rebuilds to state of the art cooling systems. We specialized in the diversity of the home in our service area. WE OFFER LIFETIME WARRANTIES ON OUR RESIDENTIAL REPAIRS. As long as you own your home, our repairs are covered for life! We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!
"Gordon is very experienced and knowledgeable. He provided very helpful information and knew what needed to be done in order to resolve our issue."
Todd W on June 2025
We have over 20 + years of industry experience, and are dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Central A/C, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!
"Mr. White found the problem and explained what needed to be done, will be here to fix it on Friday, He is a very nice man and knows his business, very professional and very easy to talk to. He will be my go to person when needed."
Marines D on October 2022
We have over 20 + years of industry experience, and are dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Central A/C, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!
"Mr. White found the problem and explained what needed to be done, will be here to fix it on Friday, He is a very nice man and knows his business, very professional and very easy to talk to. He will be my go to person when needed."
Marines D on October 2022
Our services include: Blown in Cellulose & Fiberglass Attic Insulation, Batted (Rolled) Attic Insulation, Fireproof Blown Rockwool Insulation, Fireproof Batted Rockwool Insulation, Wall Insulation, Drill n Fill Wall & Ceiling Insulation, Crawl Space Insulation, Spray Foam Insulation, TAP Pest Control Insulation, New Construction and Commercial Insulation, Insulation Removal, Attic Air Sealing, Attic Decontamination & Sanitization, Radiant Barrier Insulation, Rodent Proofing, Soundproofing, Air Duct Replacement and Cut ins, Air Duct & Dryer Vent Cleaning, Attic Fan Installation, Indoor Air Quality products, Wildfire Ember Mesh, Kitchen Hood Venting & Dryer Duct Replacement.
"Todd the owner was very pleasant and accommodating. In addition, the discount we were extending for being veterans was much appreciated. Lastly, the technicians that performed the work onsite were extremely professional and courteous. I would recommend this company to all need insulation solutions."
Randy H on January 2025
Our services include: Blown in Cellulose & Fiberglass Attic Insulation, Batted (Rolled) Attic Insulation, Fireproof Blown Rockwool Insulation, Fireproof Batted Rockwool Insulation, Wall Insulation, Drill n Fill Wall & Ceiling Insulation, Crawl Space Insulation, Spray Foam Insulation, TAP Pest Control Insulation, New Construction and Commercial Insulation, Insulation Removal, Attic Air Sealing, Attic Decontamination & Sanitization, Radiant Barrier Insulation, Rodent Proofing, Soundproofing, Air Duct Replacement and Cut ins, Air Duct & Dryer Vent Cleaning, Attic Fan Installation, Indoor Air Quality products, Wildfire Ember Mesh, Kitchen Hood Venting & Dryer Duct Replacement.
"Todd the owner was very pleasant and accommodating. In addition, the discount we were extending for being veterans was much appreciated. Lastly, the technicians that performed the work onsite were extremely professional and courteous. I would recommend this company to all need insulation solutions."
Randy H on January 2025
Penguin Heating and Air Inc is here to help! We offer a variety of HVAC services from service to installations. We are based out of the Placentia, CA area. Give our team a call today. We're looking forward to working with you!
"Solved crossed wiring problem with our neighbor’s compressor to my electrical panel. Smart technician!"
Alex P on July 2025
Penguin Heating and Air Inc is here to help! We offer a variety of HVAC services from service to installations. We are based out of the Placentia, CA area. Give our team a call today. We're looking forward to working with you!
"Solved crossed wiring problem with our neighbor’s compressor to my electrical panel. Smart technician!"
Alex P on July 2025
We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Western Air Mechanical, strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.
"fixed my furnace problem. heater works now."
Donna M on October 2024
We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Western Air Mechanical, strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.
"fixed my furnace problem. heater works now."
Donna M on October 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.
"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
Consider replacing your gravity furnace when it's over 30 years old, when you experience frequent system failures, or when your heating bills continue rising despite maintenance. Many older gravity systems operate at substantially lower efficiency rates compared to modern alternatives, often 50% to 60% versus the 80% to 98% efficiency of contemporary furnaces.
Replacement also makes sense when your existing system shows signs of deterioration that could affect safety or when professional inspection reveals significant issues.
Most gravity furnace replacements require between six and 12 hours of professional labor, spanning one to two working days, depending on scheduling and complexity. Basic installations with minimal complications may be completed in a single day, while projects requiring extensive ductwork modifications or asbestos remediation will require additional time.
The timeline includes removal of the old system, preparation of the installation area, placement and connection of the new furnace, and thorough testing.
Watch for warning signs, including inconsistent heating throughout your home, unusual noises during operation, visible corrosion or damage to the heat exchanger, and steadily increasing energy consumption. If your furnace requires frequent repairs or if you notice a yellow or flickering pilot light instead of a steady blue flame, these may indicate serious issues.
Age remains a primary consideration—systems over 30 years old warrant replacement rather than continued repair.
Well-maintained gravity furnaces that pass professional safety inspections can continue operating, but they inherently carry more risk factors than modern systems. Potential concerns include less efficient combustion that may produce carbon monoxide, deteriorating components that could create fire hazards, and the possible presence of asbestos in insulation materials.
Modern furnaces incorporate numerous safety improvements, including automatic shutdown features, sealed combustion chambers, and electronic ignition systems that eliminate standing pilot lights.