Markham Water Heater — Frequently Asked Questions
How much does water heater service cost in Markham?
Markham water heater service at 1.10× modifier: sediment flush $165–$330, element or thermocouple replacement $220–$385, tank replacement (40 gal) $880–$1,540, tank replacement (50 gal) $1,100–$1,760, tankless installation $2,750–$4,620.
Why does my Markham water heater need replacing so soon?
York Region water hardness of 16–22 GPG accelerates water heater deterioration. The most common cause of premature failure in Markham is sediment-induced tank corrosion: mineral deposits insulate the tank floor from the burner, causing overheating and corrosion. A tank that has never been flushed can show significant sediment accumulation by year 8 in York Region hard water. Add high household occupancy in Markham's multi-generational homes, and tanks see 2–3x normal heating cycles per day.
What size water heater does my Markham home need?
Household size determines tank capacity: 1–3 people: 40 gallons; 4–5 people: 50 gallons; 6+ people: 60+ gallons or tankless. Many Markham homes along the Highway 7 corridor house 6–8 people across two generations. These households routinely get undersized replacements — we assess peak simultaneous demand before any recommendation. A 40-gallon replacement for a 7-person household will result in the same hot water complaints that triggered the original call.
Is a tankless water heater right for a Markham home?
Tankless is particularly beneficial for Markham's larger multi-generational households. Key advantages: unlimited hot water output (no capacity limit), eliminates York Region hard water sediment problem entirely (no tank to accumulate scale), 20+ year service life versus 8–12 years for a tank. Enbridge gas service covers all Markham communities, making gas tankless the standard recommendation for 5+ person households.
Can I get same-day water heater replacement in Markham?
Same-day replacement is available in Markham for standard 40 and 50-gallon tank sizes. We stock these on service vehicles for Markham calls. For 60-gallon tanks, same-day may be available depending on stock. Tankless installations are typically scheduled for the next available day to allow time for gas line assessment. Call (437) 290-0902 early in the day for best same-day availability.
Are there rebates for water heaters in Markham?
Enbridge Gas offers Ontario-wide rebates for qualifying high-efficiency gas water heaters and tankless systems. Current rebate amounts vary by model. We confirm eligibility before any installation and include the rebate application process in our service. The Town of Markham does not currently offer its own separate water heater rebate program.