💧 Water Heater Repair London Ontario — $175 Flat • 24/7 • Zero Surcharge • Rheem from $2,700 • Navien Tankless from $3,500 • Descaling $199
Leaking tank • No hot water • Error codes • Navien • Rinnai • Rheem • GSW • Bradford White • TSSA certified • Same-day replacement available
Water Heater Repair — London Ontario: Rheem • Navien • Rinnai • GSW • Bradford White • AO Smith • Giant • Bosch • All brands • Tank • Tankless • Descaling • Same-day replacement • All London Ontario • (647) 550-4220
Water Heater
Repair London
Ontario.
$175 Flat. 24/7. Zero Surcharge.
Rheem from $2,700. Navien from $3,500.
A water heater failure — whether a 15-year-old tank that’s been slowly corroding or a Navien showing Error 598 from scale buildup — is a disruption your household feels immediately. No hot water affects showers, laundry, cooking, and dishwashing simultaneously. Hawana provides same-day water heater repair and replacement in London Ontario, 24 hours a day, seven days a week. The $175 service call covers the on-site diagnosis and written quote. If replacement is the right decision, the new unit arrives in the same truck for a same-day installation.
If your water heater is leaking: shut the cold inlet valve (top of tank, clockwise) and the gas valve (behind tank, 90° perpendicular) right now — then call (647) 550-4220. Same-day Rheem or Navien replacement available. $175 service call, any hour, zero surcharge, discussed as applicable toward the replacement.
Written Quote.
Zero Surcharge.
All-in includes unit, install, gas, venting, TSSA permit, and old unit removal. $175 service call applicable toward installation at same visit. Invoice = written quote.
Water Heater Repair Costs
London Ontario 2026
Every repair cost below is parts + labour, not including the $175 service call. All costs quoted in writing before any work begins. Invoice equals the written quote. Hawana services all residential gas water heater brands in London Ontario — Rheem, Navien, Rinnai, GSW, Bradford White, AO Smith, Giant, Bosch, Noritz, Paloma, and all others. The parts availability for each brand varies: Rheem, Navien, and Rinnai parts have same-day availability from London Ontario suppliers; some less common brands may require next-day sourcing. Abdullah confirms parts availability before quoting a repair timeline. Emergency same-day replacement is available if the unit fails and repair is not viable — Rheem 40-gal ($2,700 all-in) and Navien NPE-150S2 ($3,500 all-in) are stocked for same-day installation.
| Problem / Repair | Cost | What’s Covered | Notes |
|---|---|---|---|
| 🕐 SERVICE CALL (Separate from All Repairs) | |||
| Service call — any hour, any day | $175 flat | On-site diagnosis, error code reading, leak assessment, written repair or replacement quote | Zero surcharge. Can be applied toward same-day replacement. Parts and labour quoted separately before work begins. |
| 💧 TANK WATER HEATER REPAIRS (Parts + Labour, Not Including $175) | |||
| Thermocouple / thermopile replacement | $120–220 | Thermocouple or thermopile replaced. Pilot tested through full ignition cycle. | Most common cause of pilot that won’t stay lit. On tanks under 10 years old, replacement is straightforward and cost-effective. |
| Pressure relief valve replacement | $140–240 | PRV replaced. Discharge pipe inspected. System pressure verified within spec. | A dripping PRV means either the valve has failed or system pressure is too high. Both causes assessed on the same visit. TSSA certified. |
| Gas valve replacement | $280–480 | TSSA certified. Gas valve replaced. Combustion verified. Pilot tested through full cycle. | Gas valve failure causes no heat or intermittent pilot. On tanks over 12 years old, repair-vs-replace assessment presented before committing to gas valve replacement. |
| Burner assembly cleaning | $120–200 | Burner orifice cleaned. Thermocouple contact inspected. Combustion chamber vacuumed. | Pilot stays lit but main burner won’t fire or fires weakly. Often resolves without parts replacement. |
| Tank replacement — Rheem 40-gal (all-in) | $2,700 | Rheem Performance Power Vent, installation, gas line, venting, TSSA permit and inspection, old unit removal | Same-day available. Old unit drained and removed. Gas and water connections. Full pressure and temperature test. $175 service call discussed as applicable toward installation. |
| Tank replacement — Rheem 50-gal (all-in) | $2,900 | Same all-in scope as 40-gal. Higher capacity for larger households or higher hot water demand. | Most London Ontario homes are well-served by 40-gal. 50-gal recommended for 5+ person households or simultaneous multi-fixture demand. |
| ⚡ TANKLESS WATER HEATER REPAIRS (Parts + Labour, Not Including $175) | |||
| Descaling service (Navien, Rinnai, all brands) | $199 | Food-grade citric acid circulated through heat exchanger via submersible pump. 45–60 minutes. Full flush and rinse after descaling. | No service call required for descaling. $199 flat, scheduled in advance. Recommended annually in London Ontario. Resolves Error 598 on Navien, scale warnings on Rinnai. |
| Control board replacement (Navien) | $320–680 | OEM-equivalent control board. Error codes cleared. Full system test through hot water demand cycle. | Common on Navien units 8+ years old. Error codes 001, 027, 028, 030 can indicate control board failure after eliminating simpler causes. |
| Fan / blower motor replacement | $280–520 | Fan motor replaced to original spec. Combustion air pressure verified after replacement. | Navien Error 010 (abnormal combustion air pressure) often indicates fan motor wear. Fan motor must match original RPM and voltage exactly. |
| Tankless replacement — Navien NPE-150S2 (all-in) | $3,500 | Navien NPE-150S2 condensing tankless, installation, gas line, PVC direct-vent venting, TSSA permit and inspection, old unit removal | UEF 0.96. For homes up to 3 bedrooms / 3 simultaneous fixtures. Can replace both a tank and a Navien. $175 service call applicable toward installation. |
| Tankless replacement — Navien NPE-180S2 (all-in) | $3,650 | Higher output (180,000 BTU) for larger homes. Same all-in scope as NPE-150S2. | Recommended for 4+ bedrooms, simultaneous shower + laundry + dishwasher demand, or homes with radiant heating connected to the domestic water heater. |
| Rinnai RX Series tankless (all-in) | $3,500 | Rinnai condensing tankless, installation, gas, venting, TSSA permit, old unit removal. | Alternative to Navien for homeowners who prefer Rinnai brand or have existing Rinnai infrastructure. Same all-in pricing as NPE-150S2. |
Every repair and replacement cost above is quoted in writing on-site before work begins. Parts and labour are line items — not one combined number. You approve before Abdullah starts. $175 service call is discussed as applicable toward any same-day replacement. Call (647) 550-4220.
Water Heater Leak Shutoff
Step by Step — London Ontario
These 5 steps take under 5 minutes and stop the water damage before Abdullah arrives. For Navien or Rinnai tankless units, the sequence is slightly different — read the tankless note in step 2.
Tank vs Tankless
London Ontario 2026
Rheem Tank — from $2,700 All-In
Best for: Replacing an existing tank, budget-conscious homeowners, homes without adequate gas line capacity for tankless (requires 3/4-inch gas line), existing power-vent infrastructure.
- $2,700 all-in — 40-gal Rheem Performance Power Vent. $2,900 for 50-gal.
- Installation includes unit, gas line connections, power-vent piping, TSSA permit and inspection, old unit removal
- Same-day installation — usually 2–3 hours for a straight replacement
- Typical lifespan: 10–15 years in London Ontario with proper anode rod maintenance
- Lower upfront cost vs tankless. Higher operating cost over 10+ years (standby heat loss)
- No annual maintenance required (recommend anode rod inspection every 3–5 years)
Navien Tankless — from $3,500 All-In
Best for: Homeowners replacing an aging tank who want long-term efficiency, homes with adequate gas line capacity (3/4-inch to unit), households that want unlimited hot water on demand, and those eliminating standby energy losses.
- $3,500 all-in — Navien NPE-150S2 (3-bed homes). $3,650 for NPE-180S2 (4+ bed)
- Rinnai RX Series also from $3,500 all-in — same quality tier, alternative brand
- UEF 0.96 — significantly higher efficiency than a standard tank (0.58–0.67 UEF)
- Unlimited hot water on demand — no recovery time between showers
- Typical lifespan: 15–20+ years with annual descaling in London Ontario
- Annual descaling strongly recommended: $199 flat, no service call required
Tankless Descaling
$199 — No Service Call Required
London Ontario has moderately hard water at approximately 120–180 mg/L. Over 12 months of operation, calcium and magnesium minerals from this water deposit as scale inside the narrow stainless steel heat exchanger coils of your Navien or Rinnai condensing tankless water heater. Unlike a standard tank where scale settles to the bottom, in a tankless unit the high-temperature flow-through design causes mineral precipitation directly onto the coil surfaces — which are by design very narrow channels optimised for maximum heat transfer surface area per unit volume. Scale deposits on these narrow channels have an outsized impact on performance and component life. Scale acts as a thermal insulator — the burner works harder to push heat through the fouled coils, efficiency drops, error codes appear (Navien Error 598), and eventually the heat exchanger is damaged.
Descaling uses food-grade citric acid solution circulated through the heat exchanger with a submersible pump and a 5-gallon bucket (as shown). The acid dissolves the calcium deposits without damaging the heat exchanger. After 45–60 minutes of active descaling, the system is flushed with clean water through multiple cycles until the pH of the outlet water confirms all acid has been rinsed. The heat exchanger flow rate and inlet filter are inspected during the service. Unit is then powered on, a full hot water demand cycle is run to verify outlet temperature and confirm error codes are cleared, and flow rate at the designated fixture is measured. The Navien or Rinnai is then returned to you running at full rated efficiency — no parts replaced, no service call charge.
- $199 flat — no service call fee, no diagnostic charge
- All tankless brands: Navien, Rinnai, Noritz, Bosch, Paloma, and all others
- Resolves Navien Error 598, Rinnai scale warnings, reduced hot water output
- Recommended annually in London Ontario hard water conditions
- Scheduled in advance — not an emergency service
- Extends tankless heat exchanger life by years
Who Services Your Water Heater
in London Ontario
Abdullah Ghzail handles every water heater service call personally — no dispatched subcontractors. TSSA certified for natural gas and LP/propane: every gas appliance installation in Ontario requires a licensed technician, and the TSSA permit is a legal requirement for every water heater installation. Hawana is TSSA certified. The permit is included in the all-in installation price, not an add-on.
He carries Rheem Performance Power Vent tank units in 40-gallon and 50-gallon configurations on the truck for same-day replacement — meaning if the diagnosis confirms a failed tank, the new unit arrives in the same truck. For Navien NPE-S tankless installations, he carries the NPE-150S2 for same-day installations as well. Same-day installation is available in London Ontario for most water heater emergencies.
What London Ontario Homeowners Say
About Water Heater Service with Hawana
Service Area — London Ontario
and Middlesex County
Frequently Asked Questions
Water Heater Repair London Ontario 2026
All Brands. All Types.
London Ontario Water Heater Repair 2026
Tank water heaters serviced: Rheem (most common London Ontario residential brand), GSW, Bradford White, Giant, AO Smith, Bosch, Noritz (tank configurations), and all other residential gas tank models. Most tank brands share common components — thermocouple, pressure relief valve, gas valve — that are widely available for same-day repair in London Ontario.
Tank repair vs replacement threshold: On a gas tank over 12 years old, a major component failure (gas valve at $280–480) triggers the honest replacement math — because the tank anode rod is almost certainly near or past full depletion on a 12-year-old unit, and internal corrosion begins shortly after. A new Rheem at $2,700 all-in vs a $400 gas valve repair on a unit that may fail internally in 1–2 years is a straightforward comparison. Abdullah presents both options in writing.
Tankless water heaters serviced: Navien (primary, most London Ontario installs), Rinnai, Noritz, Bosch, Paloma, Takagi, and all other condensing tankless brands. Navien-specific service: Error 003, 010, 027, 028, 030, 032, 037, 598 — all diagnosed on-site using Navien diagnostic protocol. Control board, fan motor, flow sensor, thermistor, and heat exchanger assessment.
Enercare and Reliance rentals: If you have a rental water heater from Enercare or Reliance and want to own your unit, Hawana coordinates the rental return and installs a new owned unit the same day — Rheem from $2,700 or Navien from $3,500. After 5–7 years of rental fees, most London Ontario homeowners are paying more in cumulative rental than a new unit costs. Call (647) 550-4220 to compare your rental cost against ownership.
London Ontario’s water has a hardness rating of approximately 120–180 mg/L (moderately hard). This mineral content has two main consequences for water heaters. In tank water heaters, minerals accelerate anode rod depletion. The magnesium anode rod sacrificially corrodes to protect the tank lining — but hard water accelerates this process, meaning an anode rod that might last 6 years in a softer water city lasts 3–4 years in London Ontario. A fully depleted anode rod means the tank itself begins to corrode from the inside. Rust-coloured hot water is the first visible symptom; tank failure follows within 1–3 years.
In tankless water heaters, hard water deposits calcium and magnesium scale on the internal heat exchanger coils. Scale acts as a thermal insulator, forcing the burner to work harder to achieve the target outlet temperature, reducing efficiency, causing error codes, and eventually damaging the heat exchanger. Annual descaling ($199) is not optional in London Ontario — it is the maintenance task that determines whether a Navien or Rinnai lasts 15–20 years or fails at 7–8 years.
Signs your tank anode rod needs inspection: rust-coloured hot water (not cold), rotten egg smell from hot water (bacteria growing in the tank because anode rod is depleted), reduced hot water temperature (tank is working harder), or unit approaching 6+ years since installation without an anode rod inspection. Abdullah can assess anode rod condition as part of any water heater service call. The anode rod itself costs $40–80 in parts; replacement labour is typically $80–120. A $160 anode rod service can add 3–5 years to a tank that would otherwise fail.
Signs your tankless unit needs descaling: Navien Error 598 (scale detection), reduced hot water output (scale restricts flow through heat exchanger), longer time to reach target temperature, Rinnai scale warning on display, or unit has been operating for 12+ months without descaling in London Ontario. The $199 Hawana descaling service is performed without a service call fee — it is a scheduled maintenance visit, not a diagnostic call. Call (647) 550-4220 to book.
Should You Repair or Replace
Your Water Heater in London Ontario?
Abdullah presents the honest repair-vs-replace comparison in writing at every service call on units over 10 years old. You see both options with transparent costs and make the decision. No pressure on timing or brand. (647) 550-4220 — $175 flat, any hour.
Water Heater Repair London Ontario.
$175 Flat. 24/7. Zero Surcharge.
Service call $175 flat, any hour, any day, zero surcharge. Tankless descaling $199. Rheem 40-gal from $2,700 all-in. Navien NPE-150S2 from $3,500 all-in. Rinnai RX from $3,500 all-in. Same-day replacement available. TSSA certified. Written quote before work begins. Invoice equals quote. 150+ Google reviews. BBB A+.
Hawana HVAC Solutions provides water heater repair and installation services in London Ontario and Middlesex County. TSSA certified gas technician Abdullah Ghzail. Founded 2018. 150+ five-star Google reviews. BBB A+. Bilingual English and Arabic. Service call $175 flat, 24/7, zero after-hours surcharge. Parts and labour additional, quoted in writing before work begins. Common repair costs (not including $175 service call): thermocouple $120–220, pressure relief valve $140–240, gas valve $280–480, burner cleaning $120–200. Tankless descaling $199 (no service call required). Tank replacement all-in: Rheem 40-gal $2,700, Rheem 50-gal $2,900. Tankless replacement all-in: Navien NPE-150S2 $3,500, Navien NPE-180S2 $3,650, Rinnai RX $3,500. All-in includes unit, installation, gas line, venting, TSSA permit and inspection, old unit removal. Service area: all London Ontario neighbourhoods and Middlesex County. Hawana HVAC Solutions 670 Millbank Dr London ON N6E 1S2 telephone 647-550-4220. Water heater repair London Ontario: thermocouple/thermopile replacement $120–220 (parts + labour), pressure relief valve $140–240, gas valve $280–480 (TSSA certified), burner assembly cleaning $120–200. Tankless descaling $199 flat, no service call required, recommended annually for Navien and Rinnai units in London Ontario hard water conditions (approximately 120–180 mg/L hardness). Tank water heater replacement: Rheem Performance Power Vent 40-gallon $2,700 all-in, 50-gallon $2,900 all-in. Tankless replacement: Navien NPE-150S2 $3,500 all-in (sufficient for up to 3 bedrooms / 3 simultaneous hot water fixtures), Navien NPE-180S2 $3,650 all-in (4+ bedrooms, higher simultaneous demand), Rinnai RX Series $3,500 all-in. All-in pricing includes unit, installation labour, gas line work, venting (PVC for condensing tankless, power-vent for Rheem tank), TSSA permit and inspection, and old unit removal and disposal. Anode rod inspection and replacement available on all tank water heaters — anode rod condition is a key predictor of remaining tank life, especially in London Ontario hard water. Enercare and Reliance rental return coordination available — Hawana installs the owned replacement unit the same day as the rental return. Service area: all London Ontario neighbourhoods and Middlesex County communities within approximately 25 km.
