VENTILATION &AIR QUALITY IN ST. JOHN'S
HRV Specialists for St. John's
Professional HRV installation, air exchanger service, and indoor air quality solutions for St. John's and the Northeast Avalon.
Unmatched Expertise
Satisfaction Guaranteed
Certified ProfessionalsWhat Indoor Air Quality Issues Do St. John's Homeowners Face?
Tightly sealed Canadian homes trap pollutants, moisture, and CO2 indoors, causing allergies, condensation, and poor sleep without proper mechanical ventilation.
St. John's has a competitive HRV market with specialist providers. Greenfoot differentiates through comprehensive service — installation, maintenance plans, and performance optimization. The combination of damp climate, tight newer homes, and radon awareness makes ventilation a health-and-comfort essential in the St. John's market.
Condensation & Moisture Control
St. John's damp climate means indoor humidity management is critical. An HRV continuously removes moist air, reducing condensation on windows and surfaces.
Stale Air in Sealed Homes
Modern St. John's homes are well insulated but need mechanical ventilation to maintain fresh, healthy indoor air.
HRV Performance & Maintenance
Existing HRVs need regular service to perform efficiently — filters, core cleaning, drain clearing, and airflow balancing.
Mould Prevention
Newfoundland's climate makes mould prevention an ongoing concern. Balanced ventilation keeps humidity in the safe range.
Radon & Air Quality
Radon testing and indoor air quality awareness are important in the St. John's area. Ventilation is one component of a healthy indoor environment.
HRV vs ERV: Which Is Right for Your St. John's Home?
HRVs recover heat only and suit most Canadian homes, while ERVs also transfer moisture and work best in very dry or very humid climates.
HRV — Heat Recovery Ventilator
- Transfers heat between outgoing and incoming airstreams
- Removes excess indoor moisture — ideal for damp climates
- Recovers up to 80% of outgoing heat energy
- Standard choice for most Atlantic Canada homes
- Best when reducing humidity is the priority
ERV — Energy Recovery Ventilator
- Transfers both heat and moisture between airstreams
- Retains indoor moisture during dry winters
- Limits excess outdoor humidity entering in summer
- Preferred in dry climates (e.g., BC Interior)
- Best when balancing humidity in both directions
Our Recommendation for St. John's
For St. John's damp maritime climate, an HRV is the standard choice. It removes excess indoor moisture while recovering heat. An ERV is rarely needed in Newfoundland's humid environment. Our assessment confirms the right system for your home.
What Ventilation Services Are Available in St. John's?
Greenfoot provides professional HRV and ERV installation, cleaning, maintenance, and repair from our certified St. John's technicians.
Complete HRV/ERV installation, cleaning, maintenance, and repair services from our local St. John's team.
Installation
- HRV & ERV installation (new + replacement)
- Balanced ventilation duct design
- Bathroom & kitchen exhaust upgrades
- Make-up air system installation
- Commissioning & airflow balancing
Cleaning & Maintenance
- Heat exchange core cleaning
- Filter cleaning & replacement
- Condensate drain clearing
- Exterior hood inspection & cleaning
- Airflow balancing & performance check
Repair & Troubleshooting
- HRV/ERV noise & vibration diagnosis
- Frost-up & defrost cycle repair
- Fan motor & control board replacement
- Condensate drain & leak repair
- Airflow imbalance troubleshooting
Why Choose Greenfoot for Ventilation in St. John's?
Greenfoot has installed thousands of ventilation systems across 5 provinces with factory-certified technicians and industry-leading warranties.
IAQ Expertise in St. John's
Our St. John's team specializes in ventilation assessment, HRV/ERV installation, and indoor air quality optimization. Every system is commissioned for balanced airflow and peak performance.
Certified HVAC Professionals
Every ventilation installation is performed by certified HVAC professionals with training in balanced ventilation design, commissioning, and indoor air quality best practices.
Satisfaction Guaranteed
We stand behind every installation with comprehensive warranty coverage. Your comfort and air quality are our priorities — if something isn't right, we make it right.
Financing & Incentives
Make your ventilation upgrade affordable with flexible financing options and access to available provincial incentives for NL homeowners.
What Does HRV/ERV Installation Look Like in St. John's? Our Process
Most HRV/ERV installations take 1 to 2 days, with the full process from assessment to commissioning typically spanning 1 to 3 weeks.
From free IAQ assessment to commissioned system, our St. John's team handles everything.
ÉTAPE 01
Home IAQ Assessment
Our St. John's team evaluates your home's ventilation needs — measuring humidity levels, checking existing equipment, and identifying air quality issues.
- •Indoor humidity and temperature measurement
- •Existing ventilation equipment inspection (if applicable)
- •Exhaust fan performance check (bathrooms, kitchen, laundry)
- •Discussion of your air quality concerns and symptoms
COÛT: Free
Délai: 1–2 hours
ÉTAPE 02
System Design & Recommendation
We design a ventilation solution matched to your home — HRV vs ERV selection, duct layout, filtration strategy, and integration with existing HVAC equipment.
- •HRV vs ERV recommendation based on your moisture profile
- •Duct design for balanced supply and exhaust distribution
- •Filtration strategy including MERV rating recommendations
- •Detailed quote with equipment, installation, and warranty
Délai: 3–5 business days
ÉTAPE 03
Professional Installation
Our certified technicians install your complete ventilation system — HRV/ERV unit, ductwork, controls, and filtration.
- •HRV/ERV unit mounted and connected
- •Supply and exhaust ductwork installed or connected
- •Electrical connections and controls setup
- •Initial system startup and commissioning
Délai total: 1–2 weeks
Jour d'installation: 1 day typical
ÉTAPE 04
Commissioning & Balancing
We measure and adjust airflow at every supply and exhaust point — ensuring balanced, even distribution throughout your entire home.
- •Airflow measurement at every supply and exhaust register
- •Damper adjustment for balanced distribution
- •Condensate drain verification
- •System performance documentation and homeowner walkthrough
Durée: Included with installation
ÉTAPE 05
Ongoing Maintenance & Support
Your ventilation system comes with maintenance plan options, filter scheduling, and support from our local team.
QUE DISENT LES GENS DE GREENFOOT?
Nos avis 5 étoiles parlent d'eux-mêmes!
"FIXED A LONG STANDING ISSUE I HAD FROM POOR INSTALLATION BY ANOTHER COMPANY!"
The two technicians Tanner and Halim were excellent, did a great job, very tidy, and identified 2 problems with my heat pump head, and fixed a long standing issue I had from poor installation by another company! Thank you very much, looking forward to using Greenfoot again.
Frederick TOFFLEMIRE - Avis 5 étoiles
"I ONLY WISH THEY INSTALLED OUR HEAT PUMP ORIGINALLY"
Great company to deal with. We hired them to move an existing heat pump after the original installer refused to help us. The estimator and the installer were both very polite, careful and thorough. I only wish they installed our heat pump originally. I would hire them again without hesitation.
Ellen DOWNEY - Avis 5 étoiles
"WHEN THEY LEFT THE HOUSE THERE WAS NO MESS TO CLEAN UP!"
The young chaps, Marlon Marcuflo and Sylvia Richard, were wonderful to deal with. They were extremely polite, very tidy and efficient in their work, were right on schedule and did an excellent job. When they left the house there was no mess to clean up. I would recommend Greenfoot Energy Solutions to anyone thinking of upgrading their home.
Alice GRACIE - Avis 5 étoiles
"THEIR ENTIRE TEAM IS EXTREMELY EXPERIENCED, KNOWLEDGEABLE, AND CONSIDERATE"
We hired Greenfoot to install 2 heat pumps. From the beginning to end - initial home visit to the final installation touches - they were wonderful to work with. Their entire team is extremely experienced, knowledgeable, and considerate; and were very accommodating.
Michael BOYD - Avis 5 étoiles
"OUR OLD HOUSE FEELS LIKE A BRAND NEW CONSTRUCTION"
The Greenfoot Team did amazing work in our home. Our old house (built in 1959) feels like a brand new construction thanks to the ductless heat pumps, spray foam insulation and HVAC installed by the friendliest staff! Everyone we spoke to from Greenfoot was helpful and just seemed genuinely happy in their job.
Happy Homeowner - Avis 5 étoiles
"FIXED A LONG STANDING ISSUE I HAD FROM POOR INSTALLATION BY ANOTHER COMPANY!"
The two technicians Tanner and Halim were excellent, did a great job, very tidy, and identified 2 problems with my heat pump head, and fixed a long standing issue I had from poor installation by another company! Thank you very much, looking forward to using Greenfoot again.
Frederick TOFFLEMIRE - Avis 5 étoiles
"I ONLY WISH THEY INSTALLED OUR HEAT PUMP ORIGINALLY"
Great company to deal with. We hired them to move an existing heat pump after the original installer refused to help us. The estimator and the installer were both very polite, careful and thorough. I only wish they installed our heat pump originally. I would hire them again without hesitation.
Ellen DOWNEY - Avis 5 étoiles
"WHEN THEY LEFT THE HOUSE THERE WAS NO MESS TO CLEAN UP!"
The young chaps, Marlon Marcuflo and Sylvia Richard, were wonderful to deal with. They were extremely polite, very tidy and efficient in their work, were right on schedule and did an excellent job. When they left the house there was no mess to clean up. I would recommend Greenfoot Energy Solutions to anyone thinking of upgrading their home.
Alice GRACIE - Avis 5 étoiles
"THEIR ENTIRE TEAM IS EXTREMELY EXPERIENCED, KNOWLEDGEABLE, AND CONSIDERATE"
We hired Greenfoot to install 2 heat pumps. From the beginning to end - initial home visit to the final installation touches - they were wonderful to work with. Their entire team is extremely experienced, knowledgeable, and considerate; and were very accommodating.
Michael BOYD - Avis 5 étoiles
"OUR OLD HOUSE FEELS LIKE A BRAND NEW CONSTRUCTION"
The Greenfoot Team did amazing work in our home. Our old house (built in 1959) feels like a brand new construction thanks to the ductless heat pumps, spray foam insulation and HVAC installed by the friendliest staff! Everyone we spoke to from Greenfoot was helpful and just seemed genuinely happy in their job.
Happy Homeowner - Avis 5 étoiles
Visit Greenfoot Energy in St. John's
Also serving:
Paradise, Mount Pearl, Conception Bay South, Torbay, Portugal Cove–St. Philip's, Petty Harbour
Ready for Better Indoor Air in St. John's?
Schedule a free IAQ assessment with our St. John's ventilation specialists. We'll evaluate your air quality, recommend the right HRV or ERV, and provide a detailed quote — no obligation.
Common Questions About Ventilation & Air Quality in St. John's?
Below are expert answers to the most common ventilation questions from St. John's homeowners, covering HRV vs ERV, costs, maintenance, and air quality benefits.
Answers to the questions St. John's homeowners ask most about HRVs, ERVs, and indoor air quality.