💧 Tankless Water Heater London Ontario — Navien $3,500 • Rinnai $3,500 • No Rental • Same-Day Available
TSSA certified • Permit included • Old unit removed • Descaling $199 • Enercare/Reliance replacement • Rebate documentation • 150+ reviews
Tankless Water Heater Near Me London Ontario: Old North (N5X, N6H) • Old South (N6C) • Byron • Westmount (N6J) • Masonville (N6G) • White Oaks • Lambeth • Hyde Park • Riverbend • Southdale (N6E) • East London (N5W, N5Y) • Wortley Village • Dorchester • Komoka • Ilderton • Delaware • Arva • Same-Day Service Available (647) 550-4220
Tankless Water
Heater London Ontario.
Navien & Rinnai.
From $3,500. No Rental.
Most London Ontario homeowners who switch from a rental tank to a Navien tankless never want to go back. Not because of the hot water — because of the math. A $42/month Enercare rental costs $10,080 over 20 years. A Navien at $3,500 costs $3,500. You own it, you keep it, and it generates 20–30% lower gas bills every year for its 20+ year lifespan.
Navien NPE-S is Hawana’s primary recommendation: 0.97 UEF, NaviLink WiFi, built-in recirculation, strongest Canadian parts network. Rinnai RX series starts at the same $3,500 — right choice for CrossOver technology or Rinnai brand preference.
TSSA permit + inspection included. Ontario law requires a licensed TSSA technician for every gas appliance. Hawana handles the permit and inspection as part of the all-in price. Call (647) 550-4220 for a free written on-site quote.
Same $3,500 Start.
You Choose the Brand.
All-in: unit + install + gas line + PVC venting + TSSA permit + old unit removal. Written quote = invoice. No rental, no monthly fee.
You Are Paying for Equipment
That Will Never Be Yours
After 20 years renting: $10,080 paid, $0 owned, still paying. After 20 years with a Navien: $3,500 paid once, a fully owned unit still running, and approximately $4,000 in cumulative gas savings. Real difference: $10,580. The unit that costs less over 20 years is the $3,500 one. Call (647) 550-4220 to stop renting.
How to Replace Your Rental — 4 Steps, Same-Day Service
Endless Hot Water. Lower Bills.
20+ Year Lifespan.
A 50-gallon tank runs out mid-shower and takes 30–45 minutes to recover. A Navien NPE-180S2 produces 8.4 GPM of 49°C water from London Ontario’s 10°C groundwater — enough for two showers and a dishwasher running simultaneously. The tank’s fundamental limitation is eliminated. No scheduling showers, no cold surprises.
A standard tank maintains 40–60 gallons at temperature 24 hours a day, including overnight. That standby loss accounts for 15–20% of a London Ontario home’s gas use. A 0.97 UEF Navien only fires when hot water is demanded — saving an estimated $150–300/year. Over 20 years: $3,000–6,000 in gas savings alone.
London Ontario water hardness (120–180 mg/L per City of London Water Quality reports) accelerates sediment buildup in tanks. Most tanks fail at 10–12 years here. A Navien or Rinnai with annual descaling ($199) routinely reaches 20–25 years. One tankless unit in the same period you’d replace two tanks.
Navien NPE-S or Rinnai RX.
Honest Assessment of Each.
Hawana installs both without brand pressure. Navien is the primary recommendation for most London Ontario homes. Rinnai is the right choice for specific situations. Here is exactly when each one wins.
| Feature | Navien NPE-S | Rinnai RX Series |
|---|---|---|
| Starting price (all-in, London Ontario) | $3,500 | $3,500 |
| Efficiency rating | 0.97 UEF | 0.95 UEF |
| Built-in recirculation pump | ✓ | — |
| WiFi app control | NaviLink WiFi | Rinnai Control-R |
| CrossOver technology (no cold sandwich) | — | ✓ |
| Heat exchanger warranty | 15 years | 15 years |
| Canadian parts availability | Excellent | Good |
| Venting type | 2–3" PVC | 2–3" PVC |
| Best for | Most London Ontario homes — primary rec | CrossOver preference or Rinnai brand |
Hawana’s most-installed tankless brand in London Ontario since 2018. The NPE-S series achieves 0.97 UEF — the highest available. Built-in recirculation pump delivers instant hot water at the tap without a separate pump. NaviLink WiFi module connects to the Navien app for remote temperature control and scheduling. 15-year heat exchanger warranty. Best Canadian parts network of any tankless brand — repairs don’t wait on cross-border shipping. Hawana recommends Navien over Rinnai for the majority of London Ontario homes: better efficiency, stronger parts network, and built-in recirculation at the same price.
| Model | Best For | GPM | Price |
|---|---|---|---|
| NPE-150S2 | 1–2 baths, 1–3 people | ~6 GPM | $3,500 |
| NPE-180S2 | 3+ baths, 4+ people | ~8.4 GPM | $3,650 |
Rinnai is the right choice in two situations: you want CrossOver technology (eliminates the cold water sandwich between hot water draws), or you specifically prefer the Rinnai brand from previous experience. CrossOver uses a secondary pre-heated volume of water between draws — the brief cold burst between back-to-back uses is completely eliminated. Rinnai Control-R WiFi provides app-based temperature control. Same 15-year heat exchanger warranty. Same $3,500 all-in price as Navien. Hawana installs Rinnai without pressure to switch brands.
| Choose Rinnai When | Reason |
|---|---|
| You want CrossOver | Multiple back-to-back hot water draws |
| You prefer Rinnai | Previous unit, contractor rec, brand trust |
Other brands available on request: Noritz NRC condensing series, Rheem, and others. Abdullah sizes every unit on-site and will not recommend a model larger than your home requires. (647) 550-4220
Tankless Descaling London Ontario.
$199. Navien. Rinnai. All Brands.
This is a Navien cold-water inlet filter after 14 months in London Ontario’s water. The mesh is nearly blocked by calcium and sediment. A clogged inlet filter triggers error codes, reduces flow, and causes the unit to short-cycle. This is the most common cause of Navien service calls in London Ontario — and it takes 10 minutes to clean during a descaling visit. It is not the most important part of the descaling service. The heat exchanger is.
London Ontario’s water hardness of approximately 120–180 mg/L (per City of London water quality data) deposits calcium carbonate on the heat exchanger surface at a rate that causes measurable efficiency loss within 18–24 months of installation. A 5mm layer of scale insulates the heat exchanger enough to force the burner to fire longer and hotter to heat the same water volume — increasing gas consumption 15–25% and elevating operating temperatures that shorten component life. The units that reach 20–25 years are descaled annually. The units that fail at 8–12 are never serviced.
Complete visit: heat exchanger descaling + inlet filter cleaning + recommissioning. All Navien, Rinnai, Noritz, and other brands. Book annually. Same technician who installed your unit. Call (647) 550-4220.
Tankless Water Heater Failed?
Same-Day Replacement Available.
Hawana provides same-day tankless water heater replacement in London Ontario. If your Navien, Rinnai, Noritz, or any brand of tankless has failed or your rental tank has stopped producing hot water, call (647) 550-4220 immediately. Abdullah assesses for same-day installation availability based on current stock and scheduling.
How Tankless Water Heater Installation Works
5 Steps — London Ontario
Abdullah visits and measures: gas line diameter and service pressure (tankless requires more instantaneous gas flow than tanks — undersized lines are common and must be upgraded), existing venting type, simultaneous hot water demand (fixtures running at peak), and installation location. He sizes the Navien NPE-150S2 for 1–2 bathroom homes and NPE-180S2 for 3+ bathrooms — not the largest model available. Written all-in quote: unit + labour + gas line + venting + TSSA permit + old unit removal. Same-day quote. Invoice = quote.
Existing tank or unit drained, gas shut off at the unit, water connections disconnected, old unit removed from the home. For Enercare and Reliance rental replacements: rental company pickup and Hawana installation are both scheduled for the same day so you never have a gap in hot water service. Abdullah coordinates with your rental pickup window. You call Enercare or Reliance to arrange the pickup; Hawana installs your new unit the same morning.
Unit mounted on wall at manufacturer-specified clearances. Gas line capacity verified — a 1/2-inch line that served a tank may be undersized for a tankless unit with higher peak gas demand; resizing to 3/4-inch is included in the all-in price when needed. Cold water inlet and hot water outlet connected. Condensate drain line run to floor drain, laundry tub, or utility sink.
Condensing tankless units vent through 2–3 inch PVC pipe — both exhaust gas and fresh air intake. No chimney liner required. No stainless steel Category III venting required. PVC venting is significantly less expensive than what non-condensing units require. Vent exits through exterior wall or roof with correct slope, clearances, and termination per Ontario Building Code. For homes with existing chimney-vented water heaters: chimney typically capped or decommissioned — no liner needed.
Gas turned on slowly. Unit commissioned: set-point temperature, flow rate thresholds, freeze protection, recirculation mode. NaviLink WiFi module configured if included. TSSA inspector performs permit inspection (same day or next business day per TSSA scheduling). Hot water output and temperature verified at every fixture in the home — kitchen, all bathrooms, laundry room. Error codes confirmed clear. Homeowner shown the control panel, error code meanings, and annual filter cleaning location. Invoice = written quote.
What Condensing Actually Means
and Why It Matters
A condensing tankless unit has a secondary heat exchanger that captures heat from exhaust gases — heat that a non-condensing unit exhausts to the outside. That captured heat pre-warms the incoming cold water, reducing the gas the primary burner must fire to reach the set temperature. Result: 0.95–0.97 UEF vs 0.82–0.88 for non-condensing — a meaningful efficiency gap over 20 years of daily use.
The condensed exhaust gases are cool enough to vent through standard PVC pipe. No chimney liner. No stainless steel Category III venting. No extra installation cost. For most London Ontario homes, this makes condensing tankless both more efficient and simpler to install than non-condensing alternatives.
- No chimney needed. 2–3" PVC runs horizontally through an exterior wall or vertically through the roof. Ideal for homes that have replaced or decommissioned the chimney.
- Condensate drain required. ~1–2 gallons of slightly acidic condensate produced daily. Drain line runs to floor drain, laundry tub, or utility sink. Included in the installation.
- Gas line sizing is critical. Condensing tankless has higher peak gas demand than tanks. Existing line checked and upgraded if needed — included in the all-in price.
- TSSA certification required. Per TSSA regulations, all gas appliance installation in Ontario requires a licensed technician and permit. Hawana handles both.
TSSA Certified. 150+ Reviews.
Abdullah Ghzail — Every Installation Personally.
Abdullah Ghzail founded Hawana HVAC Solutions in London Ontario in 2018. Every tankless water heater installation is Abdullah personally — no subcontractors, no apprentices on the gas line or permit. He has installed Navien NPE-150S2 and NPE-180S2 units across all London Ontario neighbourhoods: replacing Enercare and Reliance rentals in Old North and Byron, installing Rinnai RX units in Westmount and White Oaks for homeowners who specifically wanted Rinnai, and converting chimney-vented tanks to PVC-vented condensing units in older Wortley Village and Old South homes.
His sizing approach is the reason the reviews mention honest recommendations: he asks how many people live in the home, how many fixtures run simultaneously, and whether there are high-flow showerheads or soaker tubs. He checks the gas line diameter. He recommends the NPE-150S2 for most 1–2 bathroom London Ontario homes — not the NPE-180S2 because it’s more expensive.
What London Ontario Homeowners Say
After Switching from Rental to Navien or Rinnai
London Ontario & Surrounding Area
Every Neighbourhood Served
Frequently Asked Questions
Tankless Water Heater London Ontario 2026
Navien or Rinnai.
From $3,500. No Rental. No Monthly Fee.
Navien NPE-150S2 from $3,500 • Navien NPE-180S2 from $3,650 • Rinnai RX from $3,500. All-in: unit + install + gas line + PVC venting + TSSA permit + old unit removal. Descaling $199. Same-day replacement available. Enercare/Reliance rental replacement specialists. Rebate documentation included. 150+ five-star reviews. BBB A+.
Hawana HVAC Solutions installs Navien and Rinnai condensing tankless water heaters in London Ontario. TSSA certified gas technician Abdullah Ghzail. Founded 2018. 150+ five-star Google reviews. BBB A+ rating. Bilingual English and Arabic. Navien NPE-150S2 from $3,500 all-in. Navien NPE-180S2 from $3,650 all-in. Rinnai RX series from $3,500 all-in. All-in price includes: unit, installation labour, gas line assessment and resizing (if needed), complete PVC venting (intake and exhaust), TSSA permit and inspection, condensate drain connection, and old unit removal. No rental, no monthly fee — you own the unit outright from day one. Tankless descaling service $199: heat exchanger descaling with citric acid circulation, inlet filter screen cleaning, recommissioning, and hot water output verification. Annual descaling recommended for London Ontario water hardness (120–180 mg/L). Same-day replacement available when stock permits. Enercare and Reliance rental replacement specialists — rental pickup and new unit installation coordinated same day. Rebate documentation for Enbridge Gas Home Efficiency Rebate and Canada Greener Homes qualifying installations provided at no charge. Service area: Old North (N5X, N6H), Old South (N6C), Byron, Westmount (N6J), Masonville (N6G), White Oaks, Lambeth, Hyde Park, Riverbend, Stoney Creek, Southdale (N6E), East London (N5W, N5Y), Argyle, Oakridge, Wortley Village, Pond Mills, Dorchester, Komoka, Ilderton, Delaware, Arva, London Ontario, Middlesex County. Hawana HVAC Solutions 670 Millbank Dr London ON N6E 1S2 telephone 647-550-4220.
