Weatherization, Energy Efficiency and Safety Rebates

Annual Available Rebates

*Additional rebates apply for Town of Vail, Town of Avon, and Edwards Metro District residents. 

  • Rebate not to exceed 50% of total project costs for any project, when combined with all utility rebates
  • HVAC tune-up maxes at 25% of total project costs


  • Rebate not to exceed 50% of total project costs for any project, when combined with all utility rebates
  • HVAC tune-up maxes at 25% of total project costs


$2,000/yearLMI Household


These are in addition to project-specific requirements (which are detailed below)

  • Home Energy Assessment or Business Energy Walkthrough is required prior to a rebate being processed, and
    preferred prior to implementing upgrades.
  • Must apply for the rebate online within 90 days of the date on the paid invoice.
  • Must provide proof (photos) of the completed project.
  • Provide an electronic version of your invoice(s)/receipt(s), and any applicable spec sheets, which can be uploaded as part of the online application or emailed to your Walking Mountains energy coach.
  • Project costs may include materials and labor costs; no tax or permit expenses are included.
  • Rebates are for existing buildings only.
  • Rebate checks will be distributed within 4-6 weeks of receiving the completed rebate application & providing all required documentation.
  • Colorado state regulation requires proper disposal of mercury-containing lamps (HIDs, all linear and u-bend
    fluorescents, CFLs, 2- 4-pin CFLs, and circular fluorescent, as an example).
  • Rebates may be assigned to the contractor completing the project, and this credit must be shown on the
  • Walking Mountains reserves the right to inspect the project after completion.
  • Walking Mountains is not liable or responsible for any act or omission of any party, consumer, or contractor
    whatsoever. Walking Mountains is not liable for rebates promised to consumers as a result of a contractor
    misrepresenting the program.
  • Rebates are subject to change and/or discontinue without notice. Funding is limited. Applications will be
    accepted on a first-come, first-serve basis.
  • Walking Mountains reserves the right to refuse payment and participation if the consumer or contractor violates
    program rules and procedures.

Questions? Contact an Energy Coach

Heat Recovery Ventilation System (HRV)

A balanced ventilation system introduces fresh outdoor air into a home at the same rate that stale indoor air is exhausted from the home. Energy Recovery Ventilation (ERVs) and Heat Recovery Ventilation (HRVs) are similar devices in that both supply air to the home and exhaust sale air while recovering energy from the exhaust air in the process.

To Qualify For Rebates:

  • Home should be at or below 0.35 Natural Air Changes per Hour (NACH); if not, air sealing must be done before or in conjunction with the ventilation project
  • Equipment must be labeled ENERGY STAR®
  • A ventilation unit is required to deliver fresh (supply) air to the main living/work space and each bedroom/office, at a minimum

Residential Air Source Heat Pump

Heat pumps offer an energy-efficient alternative to furnaces and air conditioners for all climates. Like your refrigerator, heat pumps use electricity to transfer heat from a cool space to a warm space, making the cool space cooler and the warm space warmer. Because they transfer heat rather than generate heat, heat pumps can efficiently provide comfortable temperatures for your home year-round.

Ductless, mini-split-system heat pumps (mini-splits) make good retrofit add-ons to houses with “non-ducted” heating systems, such as hydronic (hot water heat), radiant panels, and space heaters (wood, kerosene, propane). They can also be a good choice for room additions where extending or installing distribution ductwork is not feasible.

Like standard air-source heat pumps, mini-splits have two main components — an outdoor compressor/condenser and an indoor air-handling unit.

More Information about Heat Pumps & Mini-Splits:
Air-Source Heat Pump Buying Guide
Ductless Mini-Split Heat Pumps

To Qualify For Rebates:

  • The home must be heated with electricity (see electrification rebates for switching from natural gas or propane)
  • Ducted: HSPF 9+; Ductless: HSPF 10+
  • The compressor must be variable capacity (three or more distinct operating speeds, or continuously variable)
  • Must be rated for cold climates and provide heat down to 5°F or lower
    • Recommend investing in hyper heat (Mitsubishi), low ambient or extra low-temperature heat pumps that heat to -13°F or lower
  • Load calculation required to the right-size outside unit and derate for high elevation
  • Must be used as the primary heat source in the home/building

Ductless mini-split systems can be an attractive and energy-efficient alternative to traditional air conditioning or evaporative cooling systems for many homeowners. Compared to conventional air conditioning, using a ductless mini-split cooling system can cut energy costs by 30 percent.

To Qualify For Rebates:

  • No mechanical cooling or replacing an existing central air conditioning system
  • SEER 18+

In houses with forced-air heating and cooling systems, ducts are used to distribute conditioned air throughout the house. In a typical house, however, about 20-30% of the air that moves through the duct system is lost to leaks, holes, and poorly connected ducts. The result is higher utility bills and difficulty keeping the house comfortable, no matter how the thermostat is set. More about duct sealing…

To Qualify for Rebates:

  • Repair any damaged and disconnected ducts and straighten out flexible ducts that are tangled or crushed
  • Seal all leaks and connections with mastic, metal tape, or an aerosol-based sealant (AEROSEAL product OK)
  • Seal all registers and grills tightly to the ducts
  • Before and after CFM measurements for ducts required
  • Insulate ducts in unconditioned areas (attics/crawlspaces/garages); duct insulation of an R-value of 6 or higher
  • Prove all requirements above by detailed documentation on invoice(s) and/or photos
  • Recommend evaluating your system’s supply & return air balance, to ensure air return ducts not too small
  • Recommend including a new filter as part of any duct system improvement
  • Recommend you ensure there is no back drafting by getting a CAZ (combustion appliance zone) safety test after
    ducts are sealed (if you have combustion appliances/equipment in your home-gas/propane)

Diagram of a heat pump clothes dryer

A heat pump dryer works as a closed-loop system by heating the air using it to remove moisture from the clothes. They are easy to install since they don’t require ventilation and can reduce energy use by at least 28% compared to standard dryers. They also dry laundry at low temperatures, so they are gentler on clothes. More…

To Qualify For Rebates:

Image of Heat Pump (Hybrid) Water Heater

Heat Pump Water Heaters can save a household of 4 approximately $350 per year on its electric bills compared to a standard electric water heater and up to $3,750 over the HPWH’s lifetime. Larger families — that typically use more hot water — will save even more! More…

To Qualify For Rebates:

  • Must be labeled ENERGY STAR® and installed per manufacturer’s specifications
  • The existing water heater is electric (see electrification rebates for homes switching from natural gas or propane)

Using a heat tape timer can help make the system run more efficiently when it’s needed and turns it off automatically when it’s not needed. Learn more about heat tape…

To Qualify For Rebates:

  • Must be hardwired (permanently installed); recommended to be done by a licensed electrician
  • Must be programmed to run only during daylight hours when the sun helps melt ice dams (off by 5:00 pm)

Air leakage occurs when outside air enters and conditioned air leaves a building through cracks and openings in the building envelope (building envelope is the separation of the interior and exterior of a building). Air sealing limits this unintentional air movement by sealing all joints, penetrations, and other openings.

To Qualify For Rebates:

  • Infiltration levels must be measured by a blower door test before (part of an energy assessment) and after the project and shared with Walking Mountains. *If a multifamily building, must happen on 20-25% of units.
  • Air leakage must be reduced by 10% or more as measured in CFM50 by a blower door test unless you are already at or below 0.35 Natural Air Changes per Hour (NACH)
  • If at/or below 0.35 NACH before or after improvement, you are required to meet with an Energy Coach at Walking Mountains to understand opportunities for fresh air ventilation and identify existing ventilation present in the home

Insulation in your home provides resistance to heat flow and lowers your heating and cooling costs. Properly insulating your home not only reduces heating and cooling costs, but also improves comfort. More…

To Qualify For Rebates:

  • Air sealing must be completed prior to adding insulation unless you are already at or below 0.35 NACH, and should be detailed on your contractor invoice
  • Infiltration levels must be measured by a blower door test before (part of an energy assessment) and after the project and shared with Walking Mountains. * If a multifamily building, must happen on 20-25% of units
  • If at/or below 0.35 NACH before or after improvement, you are required to meet with an Energy Coach at Walking Mountains to understand opportunities for fresh air ventilation and identify existing ventilation present in the home
  • Insulation projects must conform to the following R-values/details:
    • Exterior Wall: Insulate exterior/foundation walls to minimum R-19
    • Attic: Insulate floor of unfinished attic to minimum R-60
    • Floor: Insulate floor of living space above the garage or unconditioned crawlspace to min R-30
    • Crawlspace Conditioning: Insulate crawl walls and rim joists to minimum R-19; condition the entire crawl with a minimum 10-mil vapor barrier, sealed to the foundation/footers, encapsulating the entire space; must seal vents; no insulation required in crawl ceiling

A radon mitigation system is any system or steps designed to reduce radon concentrations in the indoor air of a building.

Click here to view more radon resources from Walking Mountains.

To Qualify For Rebates:

  • Pre and post radon tests required (free radon test kits available at Walking Mountains)
  • Ask your installer to use the most Energy Efficient Fan available
  • The system must be sized and installed correctly by a qualified radon mitigation contractor

An HVAC system that is dirty, or in need of repair can cause your energy bills to skyrocket and is more likely to fail during large temperature fluctuations. An HVAC tune-up will help you save money on heating and cooling costs and avoid emergency repairs later.

To Qualify For Rebate:

  • Not to exceed 25% of the total project cost
  • One-time rebate

Induction Cooktop

Induction cooking is often considered one of the most efficient cooking technologies. With this technology, up to 90% of the energy consumed is transferred to the food, compared to about 74% for traditional electric systems and 40% for gas.

To Qualify For Rebate:

  • Total project cost can include cookware that works with induction
  • Both standalone cooktops and ranges with built-in induction cooktops are eligible
  • We require a before photo of the old cooktop/range in place and an after photo showing the new induction
    cooktop/range installed
  • The existing stove is electric (see electrification rebates for homes switching from natural gas or propane)

LED Lightbulb Efficiency

LED lightbulbs use around 85% less electricity than your normal incandescent bulbs, and 50% less than fluorescent tubes.

To Qualify For Rebates:

  • ENERGY STAR® or DesignLights Consortium (DLC) label required
  • Must upgrade existing bulbs/fixtures (rebate is not available for the addition of new bulbs/fixtures)
  • Minimum of 30% wattage reduction required for businesses/buildings

Lighting controls are a range of smart lighting devices that can regulate the levels, quality, and characteristics of light in a defined space. These smart devices aid in reducing electricity wastage while simultaneously encouraging energy efficiency.

To Qualify For Rebates:

  • Networked lighting controls (NLC) with wireless networked integrated sensors only
  • Control schedule submitted with the rebate application

Chiller systems are installed in commercial buildings to achieve proper temperature control. There are two types: water-cooled chillers and air-cooled chillers. Both are refrigeration systems used to cool fluids or dehumidify air in commercial and industrial facilities.

To Qualify For Rebates:

  • Businesses that replace air or water-cooled chillers and have completed an energy analysis of the energy efficiency
    breakdown at each load from 10 to 100 percent
  • Back-up or emergency chillers do not qualify for rebates
  • The existing chiller must still be in working order, and at least 15 years or older
  • Controls must be incorporated to reduce chiller usage during 4-9 pm when possible
  • Energy analysis must be sent in with the application

Reach-in (coffin) display cases or walk-in coolers; refrigeration or freezer applications.

To Qualify For Rebates:

  • Replace shaded pole (SP) or permanent split capacitor (PSC) fan motors
  • Permanently installed in walk-in or reach-in (coffin) cases

For the purchase and installation of automated building controls to monitor, control, and optimize energy usage and transmission. An Energy Management System (EMS) can reduce operational costs, improve overall well-being and productivity, optimize expenses, build a positive brand image, increase property value, and increase ROI.

To Qualify For Rebates:

  • Must be a new Energy Management System (EMS) where none previously existed, or for adding functionality to
    an existing EMS

To Qualify For Rebates:

  • Must be labeled ENERGY STAR® 
    • Must replace a single speed primary pump
    • New pump must be a variable speed drive (VSD)

Auditing your building’s energy usage is the first step to building a solid plan for improving energy efficiency.

An ASHRAE Level II audit begins with a Level I audit but takes the data collection and final reporting a step farther and includes more detailed energy calculations and financial analysis of proposed energy efficiency measures.

An ASHRAE Level III audit is an engineering analysis focusing on potential capital-intensive projects. It provides detailed cost and savings calculations required for major capital investment decisions.

To Qualify For Rebates:

  • The report must be provided to Walking Mountains
  • The report must show potential therm and kilowatt-hour savings

A variable frequency drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage of its power supply.

To Qualify For Rebates:

  • Add a VFD where there is not one existing, current motor or pump is constant speed
  • Must operate at minimum of 2,000 hours per year
  • Large VFD projects (project cost over $15,000) must include engineering analysis of potential kWh savings

Variable refrigerant flow systems can simultaneously heat and cool different parts of a building. These systems can be very efficient because they can take waste heat captured in one part of the building (e.g. a server room, or the side of the building exposed to direct sunlight) and deliver it to spaces requiring heat.

To Qualify For Rebates:

  • Businesses or buildings that replace existing gas heating and electric cooling system, or that add mechanical cooling with variable refrigerant flow (VRF) that will be used for heating and cooling are eligible for this rebate
  • EER 10+
  • COP 2+
  • VRF must be used as the primary heating source

You can save money on your heating and cooling bills by simply resetting your thermostat when you are asleep or away from home. You can do this automatically without sacrificing comfort by installing a programmable thermostat. More…

Learn more about best options

To Qualify For This Rebate:

  • Replace non-programmable, or broken, electric or gas thermostat
  • Setbacks must be programmed

Storm Windows: A more cost-effective way to improve the energy efficiency of a home is by installing storm windows. Storm windows add an extra pane of glass over an existing window, increasing energy efficiency and cutting heating and cooling costs by as much as a third. More…

Cellular shades: Cellular shades prevent air from leaking through your windows so cool air in the summer and heated air in the winter stay inside. More (scroll down to insulated cellular shades section)…

To Qualify For Rebates:

  • Storm window must be labeled ENERGY STAR® and be sized and installed correctly (INDOW Windows qualify);
    the whole home is not required
  • Cellular (honeycomb) shades must be double cell or cell-within-a-cell design, and be sized and installed correctly

Specific rebate details shown above are annual max amounts per household (which may go towards one or more projects until max is reached). All rebate rules listed at the top of this page apply. Each measure has specific requirements to qualify, please talk with an Energy Coach at Walking Mountains before starting your project.