Start with a diagnosis
Record what changed, when the problem started, and whether the furnace still provides heat. Have the make, model and approximate age ready. An assessment should identify the problem and explain the proposed repair before you decide whether a replacement is appropriate. This checklist is for planning a service visit, not for performing gas or electrical repairs.
Bring your service history
Collect previous repair invoices, maintenance records and any warranty documents you have. Describe recurring problems and rooms that stay cold. Age alone does not give a complete picture: equipment condition, repair scope and your plans for the home also matter.
Compare complete scopes
For repair, ask what work is included, whether other faults remain unresolved and what coverage applies. For replacement, ask about sizing, equipment, venting, duct connections, controls and removal of the old unit. Compare written proposals that list the work and exclusions clearly. Ask about any extra work before booking.
Consider the whole heating system
Uneven room temperatures may involve air distribution or controls as well as the furnace. Mention renovation plans and whether you want to compare a heat pump or hybrid option. Ask how a proposed replacement will work with existing cooling equipment and your thermostat.
Agree on the next steps
Confirm equipment availability, access requirements, the proposed schedule and the expected interruption to heating. Keep the written quote and warranty terms. Thermoza provides mobile service across Ottawa, including Kanata, Barrhaven, Nepean and Orleans; contact us with your location and equipment details to arrange an assessment.