From Tap to Pure Bliss

Enjoy cleaner, better-tasting water with whole-home and RO filters starting at just $19.95/month or $1,795 outright.

We Are Proud to Partner With

Top-Quality Water Filter Systems for Every Home in Ontario

Discover our full range of home water filter systems, from chlorine filter water solutions and hard water filters to advanced reverse osmosis (RO) water filters for home use. Whether you need a whole house water filter or a compact under-sink reverse osmosis water filter system, each unit is built for exceptional quality and energy-efficient filtration. Designed for clean, safe, and great-tasting water - perfectly suited to Ontario homes.

Water Filters

Enjoy Cleaner Water, Better Health, and Total Peace of Mind

High-quality water starts with the right filtration. Whether you're concerned about chlorine, sediment, or harmful contaminants, Go Lime offers advanced water filtration systems that give you cleaner, better-tasting water from every tap. From whole-home systems to under-sink solutions, we make it easy to upgrade your water quality and your peace of mind.

Why Homeowners Choose Go Lime for Water Filters

✅ Improved Taste & Odour

Say goodbye to chlorine taste and unpleasant odours — our filters deliver fresh, great-tasting water every time.

✅ Healthier Drinking Water

Reduce lead, chemicals, bacteria, and other common contaminants for safer water for your family.

✅ Protects Appliances & Plumbing

Filtered water helps extend the life of your water heater, dishwasher, and other fixtures by reducing scale and sediment.

✅ Simple Installation & Support

Get expert recommendations and fast, professional setup with long-term service and support from the Go Lime team.

Make Comfort Affordable With Easy Financing

⁠No Upfront Payment

Instant Approval

Flexible Monthly Plans

Frequently Asked Questions

Does my monthly price ever go up?

Our pricing isn’t a flashy promotional rate - it’s fair and transparent from the start. Over time, there may be minor adjustments to ensure you continue receiving top-notch service. But don’t worry - we’re talking about just a dollar or two per year at most. No surprises, just straightforward savings. Plus, you can purchase the equipment at any time, giving you ultimate savings and flexibility.

What is the warranty with my purchase?

With the Go Flex Program, you’re 100% covered—24/7/365—for both parts and labour, including annual maintenance. If you choose to purchase the equipment, you’ll receive the standard manufacturer’s warranty. Start with the Go Flex Program to enjoy all the benefits we offer, and when you’re ready, you can purchase the equipment at your convenience.

How long have you been in business?

Go Lime has been keeping homes comfortable since 2011. With over 150,000 customers across Ontario, we’ve spent more than a decade earning the trust of homeowners just like you. Partnering with trusted names like Enbridge, Home Depot, and Walmart, you can count on the Go Lime team to take care of your family.

Is Go Flex a rental, and what is the term?

Go Flex isn’t a never-ending rental contract. It’s a game-changer: an industry-first flexible 180-month subscription with an anytime purchase option. Here’s how it works: 50% of your monthly payment reduces your purchase price, while the other 50% covers 24/7 service, annual maintenance, and unlimited parts and labour coverage. You get all the perks of ownership without the headaches—and the flexibility to purchase the equipment at any time.

What’s the difference between a water filter and a water softener?

A water filter removes contaminants like chlorine, sediment, bacteria, and heavy metals from your water supply. A water softener, on the other hand, removes minerals like calcium and magnesium that cause hardness. While filters improve water quality and taste, softeners prevent scale buildup in pipes and appliances.

How do I know if I need a water softener?

If you notice white spots on dishes, soap not lathering well, or buildup on faucets and showerheads, you likely have hard water.

What are the benefits of installing a water softener?

Water softeners help extend the life of your plumbing, improve water heater efficiency, reduce soap and detergent usage, and leave your skin and hair feeling softer after showers.

Do water softeners remove harmful contaminants?

No, softeners only target hardness minerals. If you're concerned about chlorine, lead, bacteria, or other contaminants, you’ll need a filtration system. In many homes, a softener and whole-house filter are installed together for complete protection.

Do water filters or softeners require maintenance?

Yes, both systems require regular care. Filters should be replaced according to the manufacturer's guidelines typically every 3 to 12 months. Softeners need salt refills and occasional cleaning of the brine tank.

Can I install a water softener or filter myself?

While some systems are DIY-friendly, professional installation ensures proper setup, especially for whole-home systems that connect to your main water line. We offer expert installation to ensure long-term performance and warranty protection.

Can I use both a filter and softener together?

Absolutely. In fact, combining both gives you complete protection - soft, scale-free water plus clean, filtered water for drinking, cooking, and bathing. Many homeowners install both for full home water treatment.

How It Works Simple From Start to Finish

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Enjoy Worry Free Comfort

Why 4Most Energy Is Ontario’s Trusted Choice for Home Comfort

Local & Reliable

Proudly serving GTA homeowners with trusted service, extended maintenance, and real local support.

Clear, Upfront Pricing

Know your total cost before installation. No hidden fees  just honest, transparent quotes.

Expert Advice, Not Sales Talk

You’ll always speak directly with a licensed HVAC expert never a call center or salesperson.

Fast, Professional Installation

Same-day or next-day installs by certified technicians, done right the first time.

Flexible Financing Options

Upgrade your system with affordable monthly plans — no large upfront payment required.

Service calls starting at $89.00

Repair & Service Call

Fast, Honest Repairs You Can Trust.
When your system needs attention, 4Most Energy is just a call away.
Our licensed technicians diagnose the issue, explain it clearly, and give you a transparent cost before any work begins

No hidden fees or upselling

We repair, not replace  unless necessary

Servicing water heaters, tankless units, and boilers

Extended Labour Warranty

Extend Your Protection. Enjoy Peace of Mind.
Add extra coverage beyond your standard installation warranty.
With our Extended Labour Warranty, all service and labour costs are covered — so you stay protected from unexpected expenses for years to come.

Coverage for installation and labour

Zero repair costs during warranty period

Optional multi-year protection plans available

Backed by certified 4Most Energy technicians

4 Most Energy

We Plant Goodness

Every order supports reforestation. For each purchase made, we plant a tree because real change starts with simple actions. Place an order, and we’ll plant a tree on your behalf.

Everything You Need to Know About Water Filters

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