VRF system design and installation in Denver

Variable refrigerant flow systems move heat with refrigerant instead of air, serving many zones from a small number of outdoor units. Besties HVAC Solutions designs and installs VRF and VRV systems across the Denver metro for buildings that need individual zone control, efficient part-load performance and less ductwork.

VRF rewards careful design and clean installation. Piping layout, branch selectors, refrigerant charge and controls all have to be right for the system to deliver.

Spec sheet

VRF systems at a glance

Applications	Offices, medical office, multifamily, hotels, schools, churches, large custom homes
System types	Heat pump VRF and heat recovery VRF
Indoor units	Ducted, ceiling cassette, wall mount, floor console
Ventilation	Paired with DOAS or ERV for outdoor air
Controls	Central controllers, zone controllers, BMS integration
Climate	Cold-climate outdoor units selected for Denver lows

Who we work with

Developers, architects and engineers evaluating VRF for new buildings, owners retrofitting older buildings without room for ductwork, and custom home builders who want quiet room-by-room control. We are glad to price VRF against conventional systems so the decision is based on real numbers for the specific building.

Where VRF fits

VRF is strongest where many zones need independent control: office floors with perimeter and interior zones, medical suites, hotel rooms, apartments and large homes with many rooms. Heat recovery systems can heat some zones while cooling others, which is useful in Denver where sunny south faces can need cooling on a cold day.

Design considerations

We size outdoor units for Denver's design temperatures and altitude, lay out piping within manufacturer limits, choose branch selectors and indoor units, and plan outdoor air separately with a DOAS or ERV. Condensate routing, refrigerant concentration limits in small rooms and access for service are part of the design from the start.

Installation and commissioning

Clean, brazed piping with nitrogen purge, pressure testing and deep evacuation are mandatory. After charging, we commission each indoor unit, set up central controls and train the building staff or owner.

VRF versus rooftop units

Rooftop units are simple, familiar and inexpensive to replace, which is why most Denver commercial buildings use them. VRF costs more up front but delivers individual zone control, strong part-load efficiency and much less ductwork, which matters when ceiling space is tight or the building needs dozens of independently controlled rooms. For many projects we price both approaches so the owner can compare first cost, operating cost and comfort.

Retrofits in existing buildings

VRF is a strong option for older buildings with no room for new ductwork, such as historic offices, converted warehouses and mid-century apartment buildings. Refrigerant piping runs through small chases, and indoor units can be ducted, ceiling cassettes or wall units depending on the finish requirements. We survey the building to plan piping routes, outdoor unit locations and structural support before pricing.

Service and maintenance

VRF systems need periodic filter and coil cleaning at every indoor unit, condensate checks, outdoor unit inspection and a review of the system's fault history through the central controller. A maintenance agreement keeps these visits on schedule and catches small refrigerant or sensor issues before they spread across the system.

Controls and billing

Central VRF controllers let building staff set schedules, limit setpoints and monitor faults across every zone from one screen. In multifamily and multi-tenant buildings, some systems can support energy allocation by zone, which helps owners divide operating cost fairly. We set up schedules and limits during commissioning and train the building staff on the controller.

Designing for Denver altitude and cold

Altitude reduces air-side capacity, and Denver design temperatures are well below freezing, so outdoor unit selection must account for both. Cold-climate VRF outdoor units hold heating capacity at low temperatures, and some projects add backup heat for the coldest hours. Snow and drifting also affect outdoor unit placement and stand height.

Typical project scope

• Load analysis and zoning
• Outdoor unit and branch selection
• Piping design within manufacturer limits
• DOAS or ERV coordination
• Installation, pressure test and evacuation
• Controls and BMS integration
• Commissioning and training

What is included

• Written design summary
• Manufacturer-required installation practices
• Insured crews and EPA-certified technicians
• Startup documentation

Our process

1. Review. Plans, zoning needs and ventilation requirements.
2. Design. Equipment, piping and controls layout.
3. Install. Piping, units, testing and evacuation.
4. Commission. Startup, controls and training.

Pricing

VRF is priced per design after plan review. Scope depends on zone count, heat recovery, ventilation and controls.