5-Star Reviews
Years of Local Service
Accredited Business
Technicians
and Operated
If your basement is freezing, the bonus room is an oven, or there's no vent in either, McCormick can help. We install ductless systems for homes at 4,665 feet, with equipment sized for the specific room and Greeley's summer and winter conditions.
Explore our air conditioning services and heating services for additional options.
What Is a Ductless Mini-Split and How Does It Heat and Cool a Room?
Ductless mini-split installation connects one outdoor heat-pump unit to one or more indoor heads through a small wall opening. The system uses inverter technology to heat and cool individual rooms without ducts, giving each connected zone its own temperature control.
The opening, typically about three inches, carries the refrigerant lines, communication wiring and condensate line between the indoor and outdoor equipment. In summer, the system transfers heat outside. In winter, it reverses direction and moves available outdoor heat into the room.
An inverter compressor adjusts its output as the room's load changes instead of repeatedly running at full capacity and shutting off. This supports steadier temperatures and quieter operation.
A single-zone system connects one indoor head to one outdoor unit. It often works well for a basement, addition, sunroom, garage workshop or bonus room.
A multi-zone system connects multiple indoor heads to one outdoor unit. Each head serves a separate room with its own temperature setting, although the outdoor unit's total capacity is shared among the connected zones.
Indoor-head options include:
- Wall-mounted heads for broad air distribution
- Ceiling cassettes for an overhead, less visible installation
- Floor consoles when high-wall or ceiling placement is impractical
The correct configuration depends on room loads, available mounting areas, line-set routing and how each space is used.
What Are the Signs a Greeley Home Needs a Ductless Mini-Split?
Ductless mini-split installation may fit when one room stays 10 degrees off, a finished space has no register, portable units run constantly, or an addition strains the central system. Each sign indicates a room-specific load the existing equipment cannot serve.
Common examples include finished basements in ranch-style homes without supply registers, additions the furnace was never sized for and bonus rooms above garages.
Three particularly strong signs are:
- One room remains much warmer or colder than the house. Changing the central thermostat cannot correct a room load the system was never designed to serve.
- Portable heaters or window units run all season. This creates inconsistent comfort, occupies usable space and can introduce safety concerns when portable heaters are used improperly or connected to older circuits.
- A new addition was connected to the old ducts. Diverting airflow into another room can reduce delivery elsewhere without adequately conditioning the addition.
Older homes heated by boilers may also benefit because they often lack the ducts required for central cooling.
A mini-split is not the automatic answer to every uneven room. McCormick first evaluates insulation, exposure, airflow and existing equipment to identify why the space is uncomfortable.
How Does McCormick Make Mini-Split Installation Simple?
Mini-split installation follows a three-step plan that begins with the room's comfort problem and ends with completed work and warranty documentation. You do not need to identify the cause or choose equipment before scheduling an assessment with McCormick.
- Call (720) 217-4801 or request service online. Tell us what you're seeing. No diagnosis needed.
- A NATE-certified McCormick technician arrives, tests the system, and shows you the findings before any work is approved.
- You approve the fix, we complete it, and you get the documentation your warranty requires.
What Happens During Installation?
Ductless mini-split installation begins with a load calculation for each proposed zone. McCormick sizes the rooms individually rather than selecting equipment according to the home's total square footage.
The delivery process includes:
- Calculating the heating and cooling load for each zone
- Positioning the indoor head for effective air throw
- Keeping airflow away from beds, desks and primary seating areas
- Setting the outdoor unit above drifting snow and away from prevailing wind
- Planning a direct line-set route with a UV-rated exterior cover
- Establishing a dependable condensate path
- Coordinating the required dedicated circuit and disconnect
- Mounting and connecting the indoor and outdoor equipment
- Evacuating and preparing the refrigerant circuit to specification
- Testing heating, cooling, drainage and system communication
- Setting up the remote and available app controls
Outdoor-unit placement matters in Greeley because drifting snow can obstruct airflow or interfere with defrost drainage. The equipment must also remain accessible for future maintenance.
Installation concludes with commissioning and a homeowner walkthrough. The technician demonstrates the operating modes, temperature controls, fan settings and basic filter care before completing the job.
What Does a Mini-Split Installation Consultation From McCormick Include?
A mini-split installation consultation includes room-load assessment, placement options, zone recommendations, line-set planning, and winter-performance expectations. McCormick explains the proposed configuration and installation scope so you can review the findings before approving work for your Greeley home.
The technician evaluates:
- Room dimensions and ceiling height
- Windows, insulation and exterior exposure
- Adjacent garages, attics or other unconditioned spaces
- How and when each room is occupied
- Heating and cooling requirements
- Indoor-head placement and air distribution
- Outdoor-unit clearance, snow protection and access
- Line-set and condensate routes
- Single-zone versus multi-zone configuration
- Available low-temperature heating capacity
The consultation also establishes whether the proposed mini-split will serve as the room's primary system or supplement the home's furnace. That distinction is important during Greeley's coldest conditions.
How Long Does Mini-Split Installation Take?
Mini-split installation often takes one day for a straightforward single-zone system. Multi-zone configurations, long line-set routes, ceiling cassettes, difficult access or required third-party coordination may extend the schedule. McCormick reviews these conditions before installation begins at your Greeley home.
A direct connection through an accessible exterior wall generally requires fewer steps than a system serving rooms on different floors. Finished walls, limited outdoor clearance, and complex condensate routes can also affect the schedule.
The work is not complete when the equipment is mounted. The technician must evacuate the refrigerant circuit, verify drainage, test both operating modes, and confirm that the indoor and outdoor units communicate correctly.
Ductless Mini-Split vs. Central AC or a Ducted Heat Pump - Which Fits Your Greeley Home?
Ductless mini-split installation fits rooms or homes without usable ducts, while central AC and ducted heat pumps generally fit homes with effective duct systems. Existing infrastructure, room loads, zoning preferences, and year-round heating goals determine which configuration is appropriate for a Greeley home.
A mini-split may be a better fit when:
- One or two rooms need independent conditioning
- An addition lacks adequate supply and return paths
- The home has a boiler and no central ducts
- Different rooms need separate temperature settings
- Extending ducts would disrupt finished areas
- A garage workshop needs its own zone
Central air conditioning installation generally makes more sense when usable ducts already reach the entire house and the goal is uniform cooling from one thermostat.
A ducted heat pump may fit a homeowner who wants central heating and cooling through an existing duct system. Homeowners unfamiliar with the technology can also read how a heat pump works.
Ductless systems avoid the energy losses associated with moving conditioned air through ducts. They still require accurate sizing, however, because one oversized head cannot reliably distribute air through walls and closed doors.
Why Choose McCormick for Mini-Split Installation in Greeley?
Ductless mini-split installation from McCormick is backed by a Greeley-based residential HVAC company with more than 800 Google reviews. Its technicians are NATE-certified and EPA Section 608 certified, and the company has maintained BBB A+ Accreditation since 2015.
McCormick Heating & Cooling operates from 2881 S 31st Ave, Unit 3, in Greeley. The company also installs and services the mini-split systems it sells, giving homeowners a consistent local point of contact for ongoing equipment support.
Where Does McCormick Install Ductless Mini-Splits?
Ductless mini-split installation is available across nearby Weld, Larimer and Boulder County communities. Greeley remains the anchor location, with local dispatch from 2881 S 31st Ave, Unit 3.
The service area includes:
Ductless Mini-Split Installation FAQs
Bring Year-Round Comfort to the Room Your Ducts Do Not Reach
If your basement stays cold, your bonus room overheats, or an addition never matches the rest of your Greeley home, changing the central thermostat may not solve the underlying problem.
McCormick can evaluate the room and design a single-zone or multi-zone system around its load. Many straightforward single-zone installations can be completed in one day, giving the space independent heating and cooling without extending ducts.