Company Facts
Avalon Plumbing & Heating Ltd at a Glance
The work
- Best for
- hot water boiler work and oil-to-electric conversions in older St. John's homes
- Primary service
- HVAC
Where
- Headquarters
- St. John's, NL
- Service area
- 5 cities
- Emergency service
- Business hours only
Money and guarantees
- Free estimates
- Not advertised
- Financing
- Not advertised
Editorial Review
Our Take on Avalon Plumbing & Heating Ltd
An owner-led shop with a genuine hydronic specialty, which is the right skill set for St. John's housing rather than a generic HVAC pitch. The 4.9 rating across 250 Google reviews suggests the personal-service claim holds up in practice. Just pin down after-hours rates and the conditions on that 24-month workmanship warranty before you commit.
Best for: hot water boiler work and oil-to-electric conversions in older St. John's homes
What We Like
- 4.9 rating from 250 reviews on its Google Business Profile, read September 26, 2026
- Stated specialty in hot water boiler installation and repair, well matched to local hydronic heating
- Phone line published as open 24 hours a day, seven days a week for emergencies
- Says it stocks Giant boilers and Slant/Fin units to avoid long delivery waits
- Owner described as a certified plumber working with clients directly since founding the company in 1994
- Handles Kitec removal and replacement, a common issue in turn-of-century metro homes
Things to Consider
- No pricing published, so confirm after-hours and call-out rates before booking
- The 24-month workmanship warranty carries unstated conditions worth reading in full
- Service list leans hydronic and plumbing rather than ducted air conditioning or heat pumps
- A small owner-led team can mean longer waits for non-urgent scheduling
Google Reviews for Avalon Plumbing & Heating Ltd
Customer ratings shown here come from Google. They are separate from our editorial review above.
Google rating
4.9
Based on 250 Google reviews
Review data updated September 26, 2026
Rating Distribution
- 5 stars97%
- 4 stars1%
- 3 stars1%
- 1 star1%
iAbout this distribution
The distribution reflects the 250 Google reviews available when this profile's review data was last refreshed on September 26, 2026. Ratings and counts change continuously on Google, so figures here may lag the live profile slightly. We publish only the values returned by the source, never estimates for missing bands.
Editorial Ranking
Why Avalon Plumbing & Heating Ltd Made Our Top 7
It holds position 3 in Best HVAC Companies in St. John's, NL.
Areas Served
Based in St. John's, NL.
- St. John's, NL · HQ
- St. John's, NL
- Mount Pearl, NL
- Paradise, NL
- Portugal Cove-St. Philip's, NL
iAbout service coverage
Coverage is as the business describes it, cross-checked against where its recent documented work is. A company will often travel beyond the areas listed here for a large job and decline a small one at the same distance, so confirm your address before scheduling.
About Avalon Plumbing & Heating Ltd
Heating and plumbing in St. John's are effectively the same trade, because most homes here run hot water baseboard or in-floor systems rather than forced air, and the person who fixes the leak is often the person who sizes the boiler. That is the space avalon plumbing heating ltd works in. The company's own material describes hot water boiler installation and repair as its specialty, alongside in-floor heating systems, conversion of oil furnaces to electric, Kitec pipe removal and replacement, clogged drain cleaning, Greenfoam insulation and general plumbing maintenance for homes and commercial buildings.
The address is 62 Paddy Dobbin Dr, which puts the operation in the southwest end of the city, handy to Kenmount, the Goulds and the Southlands, with the stated service area covering St. John's and the Greater Metropolitan Area. Published hours show the line open 24 hours a day, seven days a week, and the site repeats an emergency call-out offer. In a city where a burst supply line in February is a genuine possibility, that matters. Ask what an overnight or weekend visit costs before the van rolls, since after-hours plumbing almost always carries a premium rate and the profile does not publish pricing.
Ownership is a real part of the story here. The company's about page says Sean Parrell has been in the plumbing industry since the 1980s, became a master plumber at 21, and started Avalon in July 1994 after growing up around his father's plumbing business. He is described as working with customers directly. For a homeowner, that usually means fewer layers between the diagnosis and the person accountable for it, and it often means the same face turns up for the next job three years later. It can also mean scheduling is tighter than at a larger shop with multiple crews, so a non-urgent job might wait.
On the heating side, the oil-to-electric conversion work deserves attention because it is a live issue on the Avalon. Plenty of houses built between the 1960s and 1980s still run oil-fired boilers with a tank in the basement or on a stand out back, and insurers have grown fussy about tank age. The site says the company stocks Giant hot water boilers and Slant/Fin units for residential and commercial work so customers are not waiting weeks for delivery, which is a fair point on an island where freight schedules dictate a lot. It also mentions arranging financing through NL Power, a claim worth confirming directly since utility programs change.
In-floor heating is the other stated specialty, covering concrete pours, joist systems and exterior snow melt, powered by electric, oil or geothermal. The company says the piping system carries a 25-year warranty and that it is certified with Uponor. Workmanship is covered by a stated 24-month warranty with conditions attached. Get those conditions in writing, because warranty terms on radiant work matter far more than on a tap replacement, and a transferable piping warranty is worth something if you sell the house.
Kitec replacement is the quiet third pillar. A lot of homes built or renovated around the turn of the century in the metro area have Kitec supply lines, and failures tend to show up at fittings with no warning. If you have brass fittings with an orange and blue pipe pairing, worth asking about. Replacement is disruptive and usually involves opening walls, so get a scope and a rough day count rather than an hourly guess.
Compared with the bigger mechanical contractors in the city, avalon plumbing heating ltd sits on the owner-operator side of the market: narrower bench, deeper personal involvement, strong reviews. The Google Business Profile rating of 4.9 from 250 reviews, read on September 26, 2026, is a substantial sample for a trade business in a city this size. Before hiring, confirm the plumber assigned holds a current provincial licence, ask whether permits and inspection are included on boiler or repipe work, and ask what is quoted flat versus billed by the hour. If your problem is ducted air conditioning or a heat pump, check first, since the published service list leans to hydronic heating and plumbing rather than forced-air HVAC.
iWhere this information comes from
Company history, ownership and capability details on this page are provided by the business and reviewed by our editors for plausibility and consistency. They are not the same as the credentials block, where each item carries its own verification status and source.
Reputation by Source
We show each source separately rather than blending them into a single score, because they measure different things.
Google
4.9/ 5
250 customer reviews
TenBestFind
Editorially reviewed
Ranked #3 in St. John's hvac, September 2026
Local Market Pricing
What St. John's homeowners generally pay, independent of this company.
- AC replacement, existing ductwork
- $5,500–$9,500
- Heat pump replacement
- $7,500–$13,800
- Furnace replacement
- $3,500–$7,500
- Repair call
- $150–$600
Project Photos
Business-submitted, reviewed by our editors
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Avalon Plumbing & Heating Ltd FAQs
Does Avalon Plumbing & Heating really answer calls at night?
Published hours list the line as open 24 hours a day, every day, and the company advertises 24 hour emergency service. Call the number directly rather than using the web form for anything urgent, since the site notes form replies can take up to 24 hours. Ask about the after-hours rate on the call.
What areas does the company cover?
St. John's and the Greater Metropolitan Area, according to its own site. The shop is based at 62 Paddy Dobbin Dr in the southwest of the city. If you are further out on the Avalon, worth confirming by phone before booking.
How is it rated?
Its Google Business Profile shows 4.9 from 250 reviews, read on September 26, 2026. That is a large review count for a trade business in a city of this size, though the profile is categorised as Plumber rather than HVAC contractor.
Can they convert my oil furnace to electric?
Yes, the company lists oil-to-electric conversion as a specialty and says it stocks electric boilers and furnaces to avoid long delivery waits. It also mentions arranging financing through NL Power. Confirm current program terms directly, as utility incentives change.
Do they handle Kitec pipe replacement?
Kitec removal and replacement is listed as a service. Kitec supply lines appear in many metro-area homes built or renovated around 2000 and tend to fail at fittings. Replacement usually means opening walls, so ask for a written scope and an estimate of how many days the work will take.
Is the in-floor heating work warrantied?
The company states a 25-year warranty on the piping system and a 24-month satisfaction warranty on its work, with certain conditions applying. Ask for those conditions in writing, and ask whether the piping warranty transfers if you sell the property.
Do they do air conditioning or heat pumps?
The published service list focuses on hydronic heating and plumbing rather than ducted air conditioning or heat pumps. If cooling or a ductless system is what you need, check by phone first. Most St. John's homes run hot water heating, which is where this company's stated expertise sits.
Is Avalon Plumbing & Heating Ltd licensed and insured?
We have no credential records on file for this company yet. Ask for the certificate directly from the insurer before booking work.
What areas does Avalon Plumbing & Heating Ltd serve?
St. John's, St. John's, Mount Pearl, Paradise, Portugal Cove-St. Philip's. Coverage is as the business describes it, cross-checked against where its recent documented work is. Confirm your address before scheduling, particularly at the edge of a service area.
Does Avalon Plumbing & Heating Ltd offer emergency service?
Emergency availability is not listed for this company. If you need an urgent call-out, check the ranking for companies that do list it.
What warranty do they offer?
Warranty terms are not on file. Ask for them in writing before work starts.
How was this profile built?
Credentials come from issuing authorities, ratings from the company's Google Business Profile with the date we read them, and the editorial take from our own review of estimates, warranty documents and public feedback. Anything the business told us is labelled as reported.
Can a business pay to improve its profile?
A business can subscribe to manage its own listing details, and it can buy a labelled sponsored placement. Neither changes a ranking position or the editorial assessment on this page.
Is Something Incorrect?
Business information changes. Tell us about an address, phone, website, service area, credential or ownership change, or let us know if this company has closed.
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About This Business Profile
- Last reviewed
- September 2026
- Profile last updated
- September 26, 2026
- Google review data updated
- September 26, 2026
- Sources checked
- Google Business Profile, Company website
- Sponsorship status
- No commercial relationship