### UV-C Lights in HVAC Systems
Ultraviolet-C (UV-C) germicidal light systems installed inside HVAC equipment use the same technology that hospitals and water treatment plants rely on to neutralize biological contaminants. When installed in an HVAC system, UV-C lights continuously irradiate the evaporator coil and surrounding air handler surfaces — the areas most prone to mold and biofilm growth in the warm, wet environment of a cooling system. LC Heating & Air installs germicidal UV-C systems throughout Greater Los Angeles.
Overview
### Two Types of HVAC UV Systems
Coil-sterilization UV systems install a UV-C lamp directly in front of the evaporator coil. The lamp runs continuously (or whenever the air handler runs) and prevents mold and biofilm from establishing on the coil surface. This is the most common and effective UV application in residential HVAC — keeping the coil clean dramatically reduces the musty smell that many LA homeowners notice when their AC runs, particularly in humid coastal areas. Air-sterilization UV systems install in the return duct and use stronger lamps to neutralize pathogens in moving air — more effective for airborne biological concerns but requiring higher-intensity lamps for adequate exposure time.
### Why Mold on Evaporator Coils Is a Real Problem in LA
The evaporator coil is a perfect environment for biological growth: it alternates between cool and damp (when the AC runs) and warm and humid (when the AC is off). This wet-dry cycle, combined with the organic matter captured on the coil surface, supports mold and bacteria growth that is then distributed through the supply ductwork into the living space. A UV coil sterilization system disrupts this cycle — keeping the coil surface biologically clean without chemicals.
### Installation Details
Coil UV installation requires accessing the air handler, cutting a small access port if one doesn't exist, and installing the UV lamp assembly and power supply. Installation typically takes 60–90 minutes. We recommend replacing UV bulbs annually — they lose germicidal effectiveness before they burn out visually.
Our Service Benefits
Eliminates coil mold
Continuous UV-C irradiation prevents mold and biofilm from establishing on the evaporator coil — the primary source of HVAC-related musty odors.
Improves air handler efficiency
A biologically clean coil maintains proper heat transfer efficiency. Biofilm acts as an insulating layer that reduces cooling output.
Low maintenance
Annual bulb replacement is the only maintenance required. Lamps are designed to operate continuously for a full year before replacement.
Works alongside filtration
UV-C and high-efficiency filtration address different problems — filtration captures particles, UV neutralizes biological growth on surfaces. Both together provide comprehensive IAQ protection.
UV Light Installation Cost in Los Angeles
Pricing ranges for common uv light installation services. Your actual cost depends on equipment, complexity, and home configuration. We provide an exact written estimate before any work begins.
UV light installation
$400–$1,200
UV bulb replacement
$100–$250
Service calls start at $125. Prices include parts and labor unless noted. Financing available on equipment installations. Learn about financing →
What Los Angeles Homeowners Say
“Best HVAC experience in 20 years of homeownership. Honest diagnosis, written estimate, showed up on time, cleaned up after.”
R
Robert M.Glendale, CA
“Called LC because our CO detector went off. Their technician found the issue and explained it clearly, provided a replacement estimate. No scare tactics.”
P
Patricia N.Pasadena, CA
“Got a 3-zone system for our craftsman home. Each room has its own temperature control and the electric bill is actually lower.”
A
Amy S.Los Feliz, CA
Book UV Light Installation today.
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We inspect the evaporator coil and air handler to determine the appropriate UV lamp type, size, and mounting location.
02
Access port preparation
We cut or use an existing access port in the air handler cabinet to mount the UV lamp in the optimal position relative to the coil.
03
UV system installation
We install the UV lamp assembly, route the power supply cable, and wire to the air handler's control circuit.
04
Operation verification
We verify UV lamp operation, show you the indicator light, and set up the annual replacement reminder.
Customer Reviews
300+ verified reviews
5.0
Google Reviews196 reviews on Google
SM
Sharon Meoded
Los Angeles, CA
“Lior and his team installed an AC unit in my room that doesn’t have central AC and it works amazing! They were so professional and cleaned up fully after themselves. He kept me in the loop the entire process and when he came out prior to installing showed me step by step what they would be doing! Highly recommend ! Super professional”
Google Review
PW
Patricia Williams
Los Angeles, CA
“LC Heating and Air is a reliable, affordable solution for all your central air and heating needs. I am an out of town landlord and it can be difficult to find the assistance I need. LC Heating and Air took care of my tenants issues quickly and explained all issues before making necessary repairs. I will def use them again if need be!”
Google Review
NE
Naomi Eagleson
Los Angeles, CA
“I hired LC Heating & AC to replace the drain pumps in our Mitsubishi Mini Splits and clean the condenser and was pleased with the service. Leo was responsive, thorough, and professional. I chose this company based on the glowing reviews I read online and wasn't disappointed. My husband and I look forward to using our AC this summer!”
Google Review
OI
Osher Itzhaki
Los Angeles, CA
“Amazing service!! I called LC heating and air and was fortunate enough to have scheduled them for a same day appointment . Leo arrived on time and was super friendly, polite and fixed my ax in no time . The price was fair and he explained what further steps I shouted take to keep my ac unit running for more years Thank you LC!!!”
Google Review
JS
Justin Shapiro
West Hollywood, CA
“Great experience!!’ Leo came to my house in West Hollywood at 9pm !! I had an emergency, my ac stopped working out of no where i called LC heating and air from the phone call with the office to the time the tech came the service was just amazing. Leo came and had my ac running in no time. Thank you so much !! Highly recommended”
Google Review
GH
Greg Haroutunian
Los Angeles, CA
“Sunday morning discovered AC in the unit is not working, called everywhere, no one wanted to come the same day. LC Heating came the same day, fixed the problem which apparently wasn't easy to figure out. Very professional, calm and confident, pleasant to work with. Leo was the lead guy. Great experience, highly recommend it!”
Google Review
AV
Adam Valdies
Los Angeles, CA
“Leo and his team were amazing! I am so glad we called them to handle our AC/Heating issue. The problem was not clear at first and required substantial troubleshooting but Leo was extremely communicative and very professional throughout! He figured out the problem and we cannot thank him enough! Highly recommend!”
Google Review
LO
Leeyam Ohayon
Los Angeles, CA
“I called LC Heating & Air when my heating unit stopped working. He came quickly and fixed the problem fast. The technician was very kind and experienced. He explained the problem to me and gave me maintenance tips for the future. I definitely recommend LC Heating and Air if you're in need of these services.”
Google Review
AY
ariel. yona.
Los Angeles, CA
“Amazingly service me heater broke down and I was looking for a local company in my neighborhood. I found LC heating and air I can’t express in words how pleased I was with this company the owner Leo came out was very professional friendly and fixed my heater in no time !!! Highly recommended”
Google Review
KB
kevin benoit
Los Angeles, CA
“I cannot recommend this company more. They came, assess my issue and then ordered the right parts from the company and made an amazing install and transform my AC unit into a smart controlled AC unit which no Other HVAC company was able to do, or wanted to take the time that it took to do it”
Google Review
TY
Todd Yasuda
Los Angeles, CA
“Asher (LC Heating & Air) is the best, he kept me informed throughout the whole process. Everything he told me is exactly how things were done. I couldn’t have asked for a better person to work with. If you want to work with a reliable person and company, I would highly recommend him.”
Google Review
CK
claudia kleinschmidt
Los Angeles, CA
“Our AC was broken and had been dripping for a couple days. Once we called LC heating and air they sent out Asher to fix it immediately. He checked out the AC and fixed the problem on the spot. He was super professional and informative. Highly recommend Asher and the company!”
Google Review
DF
D Fan
Los Angeles, CA
“Leo is the absolute best! Had an emergency call and he came out right away in the early evening. Showed me how my units work and what the problem was. A few minutes later, it was fixed and working again! I cannot recommend this guy more highly. Call him and you'll be happy!”
Google Review
JM
Jamie Morgan
Los Angeles, CA
“LC Heating and AC is the best! I couldn’t recommend enough. It was a 100/10 experience. Helped me get to the bottom of repairing my AC that was very complicated and messed up by someone else. They are very professional and kind on top be being super knowledgeable.”
Google Review
DA
dan amiel
Los Angeles, CA
“Great service my heater stopped working out of the blue and we just had a new born I called lc heating and air they were the only ones that answered they came out and a hour my heater was up and running I couldn’t thank them enough . Highly recommended”
Google Review
YG
Yane G.
Los Angeles, CA
“Very helpful and very respectful. I called for a repair and was answered immediately, they were great in explaining what was going wrong and how they would fix it i was glad with there work and would definitely be calling them for any future repairs.”
Google Review
LA
Leetal Adelle Cohen
Los Angeles, CA
“We reached out to Leo and had a new HVAC system installed by him and his crew. Very happy with the results! Very professional, knowledgeable and patient. The whole process was very smooth, quick and clean. System works perfectly. Highly recommend”
Google Review
AM
Agam Mashiah
Los Angeles, CA
“I called lc heating to fix my heater in my house . We decided to replace the heater throughout the whole out process the customer service was great they were very communicative, professional and were very clean . Thank you again for the great job”
Google Review
CR
Charles Raffini
Los Angeles, CA
“HVAC system was leaking in the attic. Leo took my call late at night and came immediately. He stopped the leak and came back to make sure the system was working properly. Very responsive, good work and great value. Highly recommend them.”
Google Review
YY
yoav yerushalmi
Los Angeles, CA
“Scheduled an appointment very quickly for our HVAC unit that was having trouble cooling. Were very meticulous and clean. Helped idenitfy the issue and did a great job explaining what needs to be done and doing it. Highly recommended...”
Google Review
SM
Sharon Meoded
Los Angeles, CA
“Lior and his team installed an AC unit in my room that doesn’t have central AC and it works amazing! They were so professional and cleaned up fully after themselves. He kept me in the loop the entire process and when he came out prior to installing showed me step by step what they would be doing! Highly recommend ! Super professional”
Google Review
PW
Patricia Williams
Los Angeles, CA
“LC Heating and Air is a reliable, affordable solution for all your central air and heating needs. I am an out of town landlord and it can be difficult to find the assistance I need. LC Heating and Air took care of my tenants issues quickly and explained all issues before making necessary repairs. I will def use them again if need be!”
Google Review
NE
Naomi Eagleson
Los Angeles, CA
“I hired LC Heating & AC to replace the drain pumps in our Mitsubishi Mini Splits and clean the condenser and was pleased with the service. Leo was responsive, thorough, and professional. I chose this company based on the glowing reviews I read online and wasn't disappointed. My husband and I look forward to using our AC this summer!”
Google Review
OI
Osher Itzhaki
Los Angeles, CA
“Amazing service!! I called LC heating and air and was fortunate enough to have scheduled them for a same day appointment . Leo arrived on time and was super friendly, polite and fixed my ax in no time . The price was fair and he explained what further steps I shouted take to keep my ac unit running for more years Thank you LC!!!”
Google Review
JS
Justin Shapiro
West Hollywood, CA
“Great experience!!’ Leo came to my house in West Hollywood at 9pm !! I had an emergency, my ac stopped working out of no where i called LC heating and air from the phone call with the office to the time the tech came the service was just amazing. Leo came and had my ac running in no time. Thank you so much !! Highly recommended”
Google Review
GH
Greg Haroutunian
Los Angeles, CA
“Sunday morning discovered AC in the unit is not working, called everywhere, no one wanted to come the same day. LC Heating came the same day, fixed the problem which apparently wasn't easy to figure out. Very professional, calm and confident, pleasant to work with. Leo was the lead guy. Great experience, highly recommend it!”
Google Review
AV
Adam Valdies
Los Angeles, CA
“Leo and his team were amazing! I am so glad we called them to handle our AC/Heating issue. The problem was not clear at first and required substantial troubleshooting but Leo was extremely communicative and very professional throughout! He figured out the problem and we cannot thank him enough! Highly recommend!”
Google Review
LO
Leeyam Ohayon
Los Angeles, CA
“I called LC Heating & Air when my heating unit stopped working. He came quickly and fixed the problem fast. The technician was very kind and experienced. He explained the problem to me and gave me maintenance tips for the future. I definitely recommend LC Heating and Air if you're in need of these services.”
Google Review
AY
ariel. yona.
Los Angeles, CA
“Amazingly service me heater broke down and I was looking for a local company in my neighborhood. I found LC heating and air I can’t express in words how pleased I was with this company the owner Leo came out was very professional friendly and fixed my heater in no time !!! Highly recommended”
Google Review
KB
kevin benoit
Los Angeles, CA
“I cannot recommend this company more. They came, assess my issue and then ordered the right parts from the company and made an amazing install and transform my AC unit into a smart controlled AC unit which no Other HVAC company was able to do, or wanted to take the time that it took to do it”
Google Review
TY
Todd Yasuda
Los Angeles, CA
“Asher (LC Heating & Air) is the best, he kept me informed throughout the whole process. Everything he told me is exactly how things were done. I couldn’t have asked for a better person to work with. If you want to work with a reliable person and company, I would highly recommend him.”
Google Review
CK
claudia kleinschmidt
Los Angeles, CA
“Our AC was broken and had been dripping for a couple days. Once we called LC heating and air they sent out Asher to fix it immediately. He checked out the AC and fixed the problem on the spot. He was super professional and informative. Highly recommend Asher and the company!”
Google Review
DF
D Fan
Los Angeles, CA
“Leo is the absolute best! Had an emergency call and he came out right away in the early evening. Showed me how my units work and what the problem was. A few minutes later, it was fixed and working again! I cannot recommend this guy more highly. Call him and you'll be happy!”
Google Review
JM
Jamie Morgan
Los Angeles, CA
“LC Heating and AC is the best! I couldn’t recommend enough. It was a 100/10 experience. Helped me get to the bottom of repairing my AC that was very complicated and messed up by someone else. They are very professional and kind on top be being super knowledgeable.”
Google Review
DA
dan amiel
Los Angeles, CA
“Great service my heater stopped working out of the blue and we just had a new born I called lc heating and air they were the only ones that answered they came out and a hour my heater was up and running I couldn’t thank them enough . Highly recommended”
Google Review
YG
Yane G.
Los Angeles, CA
“Very helpful and very respectful. I called for a repair and was answered immediately, they were great in explaining what was going wrong and how they would fix it i was glad with there work and would definitely be calling them for any future repairs.”
Google Review
LA
Leetal Adelle Cohen
Los Angeles, CA
“We reached out to Leo and had a new HVAC system installed by him and his crew. Very happy with the results! Very professional, knowledgeable and patient. The whole process was very smooth, quick and clean. System works perfectly. Highly recommend”
Google Review
AM
Agam Mashiah
Los Angeles, CA
“I called lc heating to fix my heater in my house . We decided to replace the heater throughout the whole out process the customer service was great they were very communicative, professional and were very clean . Thank you again for the great job”
Google Review
CR
Charles Raffini
Los Angeles, CA
“HVAC system was leaking in the attic. Leo took my call late at night and came immediately. He stopped the leak and came back to make sure the system was working properly. Very responsive, good work and great value. Highly recommend them.”
Google Review
YY
yoav yerushalmi
Los Angeles, CA
“Scheduled an appointment very quickly for our HVAC unit that was having trouble cooling. Were very meticulous and clean. Helped idenitfy the issue and did a great job explaining what needs to be done and doing it. Highly recommended...”
Common questions about uv light installation in Los Angeles
Do HVAC UV lights really work?
Yes, for their specific application. UV-C coil sterilization systems are well-supported by evidence for preventing mold and biofilm growth on evaporator coil surfaces. The key is proper placement — the lamp must be positioned so the coil surface receives adequate UV-C irradiance. Air-sterilization systems (for airborne pathogens in moving air) require high-intensity lamps because exposure time is very short.
Is UV-C light safe?
UV-C light is harmful to eyes and skin with direct exposure — this is the same mechanism that makes it effective against biological organisms. HVAC UV systems are enclosed in the air handler and sealed access panels. When we install UV systems, we include access covers over the inspection ports to prevent accidental exposure during maintenance. The light never directly irradiates the conditioned living space.
Do UV lights produce ozone?
Standard UV-C germicidal lamps (254nm wavelength) do not produce significant ozone. Some UV systems use different wavelengths or lamp types that do produce ozone — we avoid these for residential applications. Our recommended coil sterilization systems use standard germicidal UV-C that does not produce ozone at levels of concern.
How much does HVAC UV light installation cost in Los Angeles?
Coil sterilization UV system installation: $300–$550 installed, including the lamp unit and all wiring. Air-sterilization UV systems (in-duct): $500–$900 installed. Annual replacement bulbs run $30–$80 depending on the system. We provide a written estimate for your specific air handler configuration.
How long do UV-C lamps last in an HVAC system?
UV-C lamps maintain effective germicidal output for approximately 9,000–10,000 hours — roughly 12 months of continuous operation (or about 2 years if the lamp only runs when the air handler fan is running). After this point, the lamp typically still glows but has lost most of its UV-C output. Annual replacement is the standard recommendation.
Will UV lights damage my HVAC equipment?
Quality UV systems designed for HVAC applications will not damage equipment when properly installed. However, prolonged UV-C exposure to certain polymers (flex duct material, some insulation types) can cause degradation over time. We use UV-resistant mounting hardware and ensure the lamp is oriented to irradiate the coil rather than the surrounding duct or cabinet materials.
Do I need UV lights if I already have a high-MERV filter?
They address different problems. High-MERV filtration captures airborne particles including mold spores before they reach the coil. UV-C prevents mold from growing on the coil surface itself — where filtered air doesn't help because the coil surface accumulates moisture and organic matter regardless of upstream filtration. The two systems are complementary.
Can UV lights be installed on any HVAC system?
UV systems can be installed on most air handler configurations, though the specific lamp size and mounting hardware varies by air handler type. We assess your specific air handler during the consultation and confirm compatibility before installation. The most common exception is very compact air handlers in tight closets where physical access is extremely limited.
Verified Reviews
What customers say about uv light installation
Verified reviews from Los Angeles homeowners who used our uv light installation service.
“Post-fire air quality in our Altadena home was terrible. LC installed a whole-house HEPA filtration system and UV germicidal light in the air handler. Our allergist confirmed improved air quality on our next visit.”
M
Michelle O.
Altadena, CA · Apr 2025
“Our AC stopped working during a heat wave and LC had a technician here within two hours. He diagnosed a bad capacitor, had the part on his truck, and fixed it on the spot. Fair price, no upsell. Will use again.”
M
Maria R.
Sherman Oaks, CA · Aug 2025
“LC replaced our entire HVAC system — new Carrier condenser, furnace, and coil. Leo walked us through every option without pressure. The install team was professional and clean. System runs perfectly and our electricity bill dropped about 30%.”