
Find the Best Boiler Installation & Replacement Contractors for Your Business
No obligation • Fast responses • Nationwide coverage

Why you can trust HVAC Firms
HVAC Firms is a leading United States resource for evaluating HVAC service providers. Our team researches companies, checks credentials, and reviews customer feedback to present clear, unbiased information. Listings and rankings are based on merit, and companies cannot pay to change our editorial content.
Search providers near you
Top Boiler Installation & Replacement Contractors in Lakewood, Colorado Ranked
A new boiler is a significant investment in your home's comfort and efficiency. Whether you're upgrading an old, inefficient system or installing one in a new construction, professional boiler installation ensures reliable heat for years to come. This guide will help you understand the process, costs, and key considerations for boiler services in Lakewood, empowering you to make an informed decision and connect with qualified local professionals.

True Heating & Cooling
1351 W 121st Ave, Westminster, CO 80234
True Heating & Cooling is an HVAC company based in Denver, CO, offering heating, air conditioning, and indoor air quality services. They serve Westminster and nearby areas including Broomfield and Boulder. Their services include installation, repair, and maintenance of furnaces, boilers, air conditioners, heat pumps, ductless mini-split systems, and thermostats. As NATE-certified technicians and official Lennox dealers, they provide skilled work with access to quality equipment. True Heating & Cooling has 24/7 emergency availability to address urgent HVAC needs.

Comfort Pros Heating and Air Conditioning
7270 Gilpin Way #220, Denver, CO 80229
Comfort Pros Heating and Air Conditioning is a family-owned HVAC company serving Denver, CO, with over 15 years of experience. They specialize in the installation, repair, and maintenance of heat pumps, furnaces, air conditioners, boilers, and mini-split systems. Comfort Pros is known for working with high-quality manufacturers and providing thorough system analyses to help customers understand their options. Their team emphasizes clear communication and detailed explanations throughout each project.

Tonville HVAC LLC
710 N 7th Ave #1, Brighton, CO 80601
Tonville HVAC LLC is a locally owned HVAC company serving Denver, CO, and surrounding areas. Since 1987, they have provided heating, air conditioning, geothermal, and ventilation services including installation, repair, and maintenance of furnaces, boilers, rooftop units, and ductless mini splits. Their team is experienced in geothermal system work and offers emergency service along with industry-leading warranties on workmanship and parts.

L&M HVAC & Mechanical
8500 Cedar Ln, Westminster, CO 80031
L&M HVAC & Mechanical is a full-service heating and cooling company based in Westminster, Colorado, serving the Metro Denver region including Denver and surrounding communities. They provide installation, repair, maintenance, and replacement services for furnaces, air conditioners, heat pumps, boilers, ductless mini-splits, and indoor air quality systems. The company offers 24/7 emergency HVAC service to address urgent heating and cooling needs promptly. Their technicians are licensed and insured, working with all major brands to ensure efficient and reliable system performance.

Mac-Vik Plumbing, Heating, and Electrical
13050 W 43rd Dr #100, Golden, CO 80401
Mac-Vik Plumbing, Heating, and Electrical is a home service provider located in Denver, CO, offering plumbing, heating, electrical, and HVAC solutions. Their services include repair, installation, and maintenance of air conditioning, furnaces, boilers, and electrical systems. The company has been serving the area since 1962 and provides 24/7 emergency services for urgent heating, cooling, or plumbing issues. Mac-Vik emphasizes energy-efficient solutions and backs their work with a 12-month labor warranty.
Understanding Your Boiler Options
Choosing the right boiler for your Lakewood home is the first critical step. The type of boiler you select will impact your home's heating performance, energy bills, and installation complexity. Modern systems are far more efficient than older models, offering substantial long-term savings.
- Conventional Boilers: These are traditional, non-condensing units. While reliable, they are generally less efficient than modern options and are often replaced during upgrades.
- High-Efficiency (Condensing) Boilers: This is the modern standard for new installations. These units achieve Annual Fuel Utilization Efficiency (AFUE) ratings of 90% or higher by extracting extra heat from exhaust gases, making them the best choice for saving on energy costs despite a higher upfront price.
- Combi Boilers: A popular space-saving option, combination boilers provide both heat for your hydronic system and on-demand domestic hot water from a single, compact unit, eliminating the need for a separate water heater tank.
Most homes in Lakewood and the greater Los Angeles area use natural gas as the primary fuel source for heating systems. The heated water is then distributed through a hydronic system, which circulates it via pipes to baseboard heaters, radiators, or radiant floor tubing 1 2.
Key Regulations and Safety Requirements in California
Boiler installation is strictly regulated to ensure safety and efficiency. In California, all work must be performed by a licensed professional who will secure the necessary permits and adhere to state and local building codes.
- Licensing: Any contractor performing boiler installation or replacement in Lakewood must hold a valid C-4 license, which is the state classification for warm-air heating, ventilating, and air-conditioning contractors. This ensures they have the required expertise.
- Permits: A permit from the local building department is mandatory. This ensures the installation will be inspected and meet all safety codes. Permit fees in the area typically range from $50 to $200+.
- Critical Safety Components: Your installer must include specific safety devices:
- Expansion Tank: Required to safely handle the expansion of heated water in a closed system. It must be properly sized and securely fastened.
- Low-Water Cutoff (LWCO): A mandatory safety device that shuts down the boiler if the water level drops too low, preventing damage and hazardous operation.
- Proper Venting: Correct venting for exhaust gases is critical for safety and must comply with manufacturer specifications and code requirements.
- Drainage: The boiler room or installation area must have a floor drain for maintenance and emergency drainage. However, the boiler's hot water system itself cannot have a direct connection to the sanitary drainage system 3.
Breakdown of Boiler Installation Costs
The total cost for a new boiler setup in Lakewood can vary widely based on the unit type, home size, and system complexity. For a typical residential project, homeowners can expect an average total investment between $4,000 and $10,000 or more.
Here's a closer look at what contributes to the final price:
- Equipment Cost: The boiler unit itself is the largest variable, ranging from around $2,000 for a basic conventional model to $8,000 or more for a high-efficiency or combi boiler.
- Labor: Professional installation labor typically costs between $1,500 and $2,500. This covers removal of the old unit, placement, piping, electrical connections, and system testing 4 5.
- Ancillary Costs: Several other factors can influence your final quote:
- Old Unit Removal: Disposing of the old boiler and related components may cost $500 to $1,000.
- Gas Line Work: If a new or upgraded gas line is needed, this can add $0 to $2,000 to the project 6.
Find the perfect boiler installation & replacement contractors for your needs
Get personalized recommendations and expert advice
The Professional Installation Process
A proper boiler replacement or new installation is a multi-step process handled by your licensed contractor. Understanding these steps can help you know what to expect.
- Initial Consultation and Load Calculation: A qualified professional will assess your home's heating needs by performing a heat load calculation. This determines the correct boiler size (in BTUs) for your specific square footage, insulation, and window quality-crucial for efficiency and comfort.
- System and Equipment Selection: Based on the assessment, your contractor will recommend the best boiler type and model for your home, budget, and hot water needs (e.g., a combi boiler if you also want efficient water heating).
- Permitting and Preparation: Your contractor will pull the required local permits. The installation area will be prepared, which includes safely shutting down and draining the old system (if applicable) and ensuring the workspace is ready.
- Removal and Installation: The old boiler is disconnected and removed. The new unit is positioned, connected to fuel and water lines, and integrated with your home's hydronic distribution system (pipes, baseboards, radiators).
- Safety Device Integration: The expansion tank, low-water cutoff, pressure relief valve, and proper venting are installed and tested.
- System Startup and Inspection: The system is filled, purged of air, and fired up. The contractor will balance the system, check for leaks, and verify all controls and safety devices operate correctly. A final inspection by the city or county may be required to close the permit.
Benefits of a Modern Boiler System
Upgrading your heating plant offers advantages beyond just reliable warmth.
- Lower Energy Bills: High-efficiency condensing boilers can significantly reduce your natural gas consumption. The higher AFUE rating means more of the fuel's energy is converted into heat for your home 9.
- Improved Comfort: Modern boilers provide consistent, even heat. Advanced modulating burners adjust their output to match the home's exact heating demand, eliminating temperature swings and cold spots common with older systems.
- Increased Home Value: An updated, efficient heating system is an attractive feature for potential buyers and can be a positive selling point for your property.
- Reliability and Peace of Mind: New equipment comes with manufacturer warranties and is far less likely to break down, saving you from emergency repair calls and costly interruptions in service during colder weather.
Maintaining Your New Boiler
To protect your investment and ensure long-term efficiency, regular maintenance is key. An annual service check by a professional should include inspecting the heat exchanger, checking and testing all safety controls (like the LWCO and pressure relief valve), cleaning the burner assembly, and verifying proper water chemistry and pressure. Simple homeowner tasks include keeping the area around the boiler clear and monitoring the system pressure gauge.
Frequently asked questions
Sources
Footnotes
-
Cost of Hydronic Heat - https://www.radiant-floor-heating.com/hydronic/cost-of-hydronic-heat/ ↩
-
Boiler Installation, Repair & Maintenance | CaitCo Santa Fe - https://caitcocares.com/heating-services/boiler-installation-repair-maintenance/ ↩
-
Residential Water Heater and Boiler General Requirements - https://www.townoftiburon.org/DocumentCenter/View/5177/Residential-Water-Heater-and-Boiler-Hand-Out ↩
-
Boiler Replacement Costs: Smart Budgeting and Planning ... - https://www.tcmemt.com/post/the-cost-of-boiler-replacement-expert-guide-to-smart-budgeting-and-installation-planning ↩
-
How Much Does Boiler Installation and Replacement Cost? [2026 ... - https://www.angi.com/articles/how-much-does-boiler-installation-cost.htm ↩
-
How Much Does Boiler Replacement Cost in Los Angeles, CA? - https://www.angi.com/articles/how-much-does-boiler-installation-cost/ca/los-angeles ↩
-
How Much Does a New Boiler Cost to Install or Replace? (2026) - https://homeguide.com/costs/boiler-replacement-cost ↩
-
How Much Does Boiler Replacement Cost? (2026) - This Old House - https://www.thisoldhouse.com/heating-cooling/boiler-replacement-cost ↩
-
Boiler Replacement Cost and Price - Carrier - https://www.carrier.com/residential/en/us/products/boilers/cost-buying-boiler-replacement/ ↩