Heating & Cooling

Ductless Heat Pump Installation in Trenton & Quinte West

A ductless mini-split heat pump delivers efficient heating and cooling to any room — without ductwork. Johnston Mechanical HVAC LTD installs TOSOT and GREE ductless systems across Trenton, Quinte West, Belleville, and Brighton. Brandon personally oversees every installation.

Ductless heat pumps are one of the most versatile HVAC solutions available. A single outdoor unit connects to one or more indoor wall-mounted heads, each controlled independently. That means you can heat or cool a sunroom, a basement, a garage, a home addition, or a bedroom that your central system never quite reached — without tearing into walls or running new ductwork.

Johnston Mechanical installs TOSOT and GREE cold-climate ductless systems. Both brands are engineered for Ontario winters, with rated heating capacity down to -25 degrees Celsius. TOSOT and GREE are manufactured by the same parent company (Gree Electric) and represent two of the most reliable ductless product lines available in Canada. Brandon will recommend the right model and configuration for your space during the site visit.

Multi-zone ductless systems allow one outdoor unit to serve multiple indoor heads — each in a different room, each with its own thermostat. This is a practical solution for homes that need comfort control in several areas without the cost and disruption of installing a full ducted system. Brandon sizes multi-zone systems carefully to ensure the outdoor unit is not over- or under-matched to the combined indoor load.

Ductless systems are also a strong choice as a supplement to an existing forced-air system. If your furnace and central AC handle most of the house well but one or two rooms are always too hot in summer or too cold in winter, a single-zone ductless unit targeted at those rooms is often the most cost-effective fix. No ductwork modifications, no balancing headaches — just a dedicated unit for the problem area.

Installation is straightforward: the indoor head mounts high on a wall, a small hole through the exterior wall carries the refrigerant lines and electrical to the outdoor unit, and the outdoor unit sits on a pad or wall bracket. Most single-zone installations are completed in a day. Brandon will walk you through placement options during the site visit to ensure the indoor head location makes sense for the room's layout and airflow.

Before any work begins, Brandon visits the site to assess the space, confirm electrical capacity, and determine the best location for both the indoor head and the outdoor unit. You receive a written quote after that visit. There are no surprises on the invoice.

Johnston Mechanical serves Trenton, Quinte West, Belleville, Brighton, Frankford, Stirling, Campbellford, and surrounding Hastings County and Prince Edward County communities.

What's Included

  • Site visit and written quote
  • TOSOT or GREE ductless unit supply and installation
  • Indoor wall-mounted head installation
  • Outdoor unit installation on pad or wall bracket
  • Refrigerant line set and electrical connection
  • Refrigerant charge and leak check
  • Full system commissioning and test
  • Homeowner walkthrough and remote programming
  • 5-year labour warranty (10-year upgrade available)

Frequently Asked Questions

Can a ductless heat pump heat my space in a Trenton winter?

Yes. TOSOT and GREE cold-climate models are rated to maintain full heating capacity down to -25 degrees Celsius — well below the coldest temperatures recorded in the Trenton and Quinte West area. These are not standard ductless units; they are engineered specifically for Canadian winters.

How many rooms can one outdoor unit serve?

Multi-zone systems can connect one outdoor unit to two, three, or four indoor heads, each in a separate room. Each head operates independently. Brandon sizes the outdoor unit to match the combined load of all indoor heads — proper sizing is critical to efficiency and comfort.

How disruptive is the installation?

Minimal. The indoor head mounts on a wall, a small core hole through the exterior carries the lines to the outdoor unit, and the outdoor unit sits on a pad or bracket. Most single-zone installations are completed in one day with no drywall work required.

Get a Written Quote — No Obligation

Pricing is provided after a site visit. No made-up numbers over the phone — just an honest assessment from a TSSA certified technician.