iSpring Under-Sink Reverse Osmosis System
from $1,345 installed or $32.71/mo*
Buy nowPure drinking water straight from your tap
Under-sink reverse osmosis systems, from multi-stage tank systems to compact tankless units, installed from $1,345 across the GTA and Southern Ontario.
Reverse osmosis systems
iSpringNew models are on the way. Ask us for an installed quote.
*Monthly estimate over 60 months at 15.99% APR with humm, on approved credit (O.A.C.), before tax. 0% for 12 months is also available. humm confirms your exact payment before you accept.
Too many choices? Simplify it here.
5-stage or tankless?
A 5-stage system stores purified water in a small tank under the sink and is the proven, lower-cost choice. A tankless system filters on demand, so it saves cabinet space and fills a glass faster. Want to treat all the water in your home too? See whole home water filtration.
Ask an expert for a recommendation
Pay your way
Explore payment options
0% interest for 12 months (O.A.C.)
Or spread the cost over 12 to 60 months at 15.99%, with no monthly fees. Choose humm at checkout. The soft credit check won't affect your credit score.
Buy it installed
Bottled-quality water, installed and priced upfront
Reverse osmosis removes most dissolved solids, lead, chlorine taste and odour from your drinking water. We install it under your kitchen sink with a dedicated faucet and show you how to change the filters.
Why homeowners choose us for reverse osmosis
Trusted brands, proven in Canadian winters
We install equipment from manufacturers with strong warranties and local parts support.
Transparent pricing with installation included
The price on the page includes standard installation. Anything extra is quoted and agreed first.
Licensed, insured technicians
Every system is installed by licensed, insured technicians and tested before we leave.
Expert guidance, zero pressure
We'll help you choose the right size and type, with no upselling.
30-day money-back guarantee
Full manufacturer warranty, registered for you, a 1-year labour warranty and our money-back guarantee.
Real homeowners. Real reviews.
5.0 ★ out of 5 from 55 Google reviewsS
Saad R.Google review
★★★★★
Great experience with Mr. Heating and Home. Clear and helpful communication throughout, talked me through options, cost/benefit and answered every question. Installation was on-time, clean and with licensed professionals. And the best part, beat Costco pricing and let me pay by Amex!
M
Marion H.Google review
★★★★★
We had pleasant experience with Mr. Heating and Home. They installed a heat pump, electrical furnace, thermostat and a new electrical panel. Everything went smooth. No complaints. They laid down a red carpet and were respectful, professional.
G
Garry T.Google review
★★★★★
I had an old air system taken out and a new heat pump put in. These guys did a great job and were quick installing the new heat pump. When they left everything was clean and tidy. I would recommend Mr.Heating and Home team to anyone looking to upgrade! Great team!
T
Tamkin N.Google review
★★★★★
Uthman was amazing! The process was so smooth and the installers were helpful and polite. They put down a carpet to make sure nothing was damaged and were very professional. I highly recommend them.
Explore Our Product Categories
Every system is sold installed, with the price on the page or an upfront quote before you book. Pick a category to compare brands and models.
Frequently asked questions
How much does reverse osmosis cost installed?
Under-sink reverse osmosis systems are installed from $1,345, including a dedicated drinking-water faucet.
5-stage or tankless?
A 5-stage system stores purified water in a small tank and costs less. A tankless system filters on demand, saves cabinet space and fills a glass faster.
How often do filters need changing?
Pre-filters every 6 to 12 months and the RO membrane every 2 to 3 years, depending on your water and use.
Why Ontario Homeowners Choose Mr. Heating & Home
Clear, Upfront Pricing
The installed price is on the page before you book. Any extra work is quoted and agreed before we start.
Same-Day Installation
Order early and we can often install the same day across the GTA. Pick your preferred date and time right in the cart.
Easy Online Ordering
- Pick your product.
- Choose your install date.
- Pay in full or with humm at checkout.
Peace-of-Mind Guarantee
Manufacturer warranties registered for you, plus our 30-day money-back guarantee.
Local and Trusted
10 years in business, 300+ homes served and a 5.0-star Google rating across the GTA and Southern Ontario.
Financing
Spread the cost with humm
Replace a failed furnace or water heater now and pay over time. Choose humm at checkout for 0% interest over 12 months, or up to 60 months at 15.99% (O.A.C.).
See financing options
Own it, don't rent it
Why pay rent on a water heater forever?
Rental plans can cost far more than the heater over their lifetime. Buy it installed, own it outright and keep the full manufacturer's warranty.
Shop water heatersWe've Got Your Back. Let's Chat.
Whether it's a quick question, a same-day install or finding the right system for your home, we keep it simple. No pressure, no upselling, just honest help. Prefer email? Write to info@mrheatingandhome.com.
Speak to an Expert
Need a quick answer? Call toll-free 1-866-810-6649 or locally 905-418-2629. Mon–Fri 7 am–7 pm · Sat–Sun 8 am–5 pm.
Talk to an expertNot Sure Which Unit to Buy?
Send us a message about your home and current system. We'll get right back to you with the right options, sizes and installed prices.
Help Me Choose
Answer four quick questions about your home and we'll point you to the systems that fit, with installed prices.
Start the quizNeed a hand?
We're here to help.
Tell us what you need and our team will call you back, usually the same day. No pressure, no obligation.
- Free advice on the right size and type for your home
- Upfront installed pricing, no surprise add-ons
- Same-day installs often available
5.0★ on Google · 55 reviews
Need Quick Answers?
Call us at 1-866-810-6649 and a real person will help you choose the right system.
