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Are Ductless Mini-Splits Right for Your London Home?

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Ductless Mini-Split Guide · London ON

Ductless Mini-Splits in London, ON: Is It The Right HVAC Choice For Your Home?

Discover how ductless mini-split systems offer a flexible, efficient solution for heating and cooling homes in London, Ontario — with or without existing ductwork.

📅 Updated March 25, 2026 👤 By Abdullah Ghzail, Lead Technician & Founder ⏱️ 7 min read 🏠 London, Ontario
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Many homeowners in London are seeking flexible and efficient alternatives to traditional furnaces and central air conditioners. Ductless mini-split systems are a powerful solution — providing both heating and cooling without ductwork. But are they right for you? Hawana HVAC explores the ideal scenarios for this versatile technology, from century homes to garage workshops.

What is a Ductless Mini-Split?

A ductless system, also known as a mini-split heat pump, has two main components: an outdoor compressor/condenser and one or more indoor air-handling units (heads). They are connected by a small conduit containing power and refrigerant lines. Unlike central systems, they don't need a network of ducts to distribute air. Installation requires only a small 3-inch hole through your wall — no invasive construction.

Ductless Mini-Splits Are Perfect For:

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Older Homes Without Ductwork

Many of London's beautiful century homes in Old North, Wortley Village, and Woodfield were built with boilers and radiators, lacking ductwork for central AC. A ductless system provides efficient air conditioning without the costly and invasive process of installing ducts ($10,000-$20,000 savings). Perfect for heritage home preservation.

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New Home Additions & Sunrooms

Instead of trying to extend your existing ductwork (which can strain your central HVAC system and may not provide adequate airflow), a dedicated mini-split for your new addition provides independent, efficient climate control. Each addition gets its own thermostat and doesn't affect the rest of the house.

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Solving Hot or Cold Spots

If one room, like a south-facing bedroom, an office above the garage, a converted attic, or a sunroom, is always too hot or cold, a single-zone ductless unit can solve the problem without affecting the rest of the house. The unit has its own thermostat and operates independently of your central system.

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Garages, Workshops, and Sheds

A ductless mini-split is an excellent garage heating solution in London, providing both heating and cooling to make the space usable year-round. Unlike space heaters, mini-splits are energy-efficient and don't take up floor space (wall-mounted). They work efficiently down to -25°C, keeping your garage warm for winter projects.

Key Benefits of Ductless HVAC Systems

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Zoned Comfort

Each indoor head has its own thermostat, allowing you to set different temperatures in different rooms (zones). This saves energy by not heating or cooling empty rooms. Perfect for homes with varying usage patterns.

Superior Energy Efficiency

By eliminating energy loss from leaky ductwork (which can account for up to 30% of energy consumption), ductless systems are incredibly efficient. Many models achieve 20+ SEER cooling and 10+ HSPF heating, leading to 20-40% lower hydro bills.

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Improved Indoor Air Quality

Ductless systems have multi-stage filtration that can drastically reduce dust, pollen, bacteria, and other allergens. Since there are no ducts to clean, you breathe healthier air. Many models include washable filters and dehumidification modes.

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Quiet Operation & Quick Installation

The indoor units are whisper-quiet (as low as 19 dB — quieter than a library). Installation requires only a small 3-inch hole in the wall, taking 4-8 hours for single-zone systems. Much faster and less intrusive than traditional HVAC work.

💡 Pro Tip from Abdullah: Ductless mini-splits are not just for cooling — modern cold-climate models heat efficiently down to -25°C to -30°C. For London homeowners, they're a viable primary heat source for 95% of winter days. Many of my customers in century homes use mini-splits for AC in summer and supplemental heating in winter, saving hundreds on energy bills compared to electric baseboards or window AC units. Plus, you get a 10-year warranty on most systems.
Abdullah Ghzail - Lead Technician Hawana HVAC

Abdullah Ghzail – Owner & Lead TSSA-Certified HVAC Specialist

"After hundreds of mini-split installations across London, I've seen how transformative they can be — especially for century homes. Installing central AC in a Wortley Village heritage home would cost $15,000-$20,000 in ductwork alone, plus equipment. A 3-zone mini-split costs $7,000-$9,000 installed, provides both heating and cooling, and preserves the home's character. For garages, sunrooms, and hot spots, mini-splits are the perfect solution. The cold-climate technology works incredibly well — I have customers who heat their entire home with mini-splits and backup electric, saving 30-50% compared to propane or electric baseboards."

TSSA Gas Technician LP/Propane Certified 138 Five-Star Reviews Ductless Specialist

What London Homeowners Say About Ductless Mini-Splits

★★★★★

"Our 100-year-old home near Wortley Village has no ductwork — just radiators. We wanted AC but didn't want to tear open walls for ducts. Abdullah installed a 3-zone Mitsubishi ductless mini-split for $7,500. Now we have AC in summer and supplemental heating in winter. The system is whisper-quiet and super efficient. Our hydro bill is lower than our neighbours with central AC. Perfect solution for heritage homes in London."

— Birch K. London ON · August 2025

★★★★★

"Our garage above White Oaks was freezing in winter and boiling in summer — unusable most of the year. Abdullah installed a single-zone ductless mini-split for $3,800. Now our garage is comfortable year-round for working on projects and storing sensitive items. It heats efficiently even when it's -20°C outside. Best upgrade to our home. Should have done it years ago."

— Stone T. London ON · September 2025

★★★★★

"Our south-facing bedroom near Masonville was always 5°C hotter than the rest of the house in summer — impossible to sleep. Central AC couldn't keep up. Abdullah installed a single-zone mini-split for $3,500 just for that room. Now we can sleep comfortably while keeping the rest of the house warmer to save energy. The unit is so quiet we don't notice it running. Solved our hot spot problem perfectly."

— Mist B. London ON · October 2025

Common Questions

Ductless Mini-Split FAQ — 2026

Yes! Modern cold-climate heat pump technology allows many ductless models to heat efficiently in temperatures as low as -25°C to -30°C. They are a viable primary heating source for many homes in Southwestern Ontario. For extreme cold snaps below -25°C, a backup heat source (like your existing furnace or electric baseboards) may be needed, but modern units handle 95% of London winter conditions easily.

This depends on the model. Multi-zone systems can typically support anywhere from two to eight indoor units connected to a single outdoor condenser, allowing for customized climate control throughout your entire home. Each indoor unit has its own thermostat, so you can set different temperatures in different rooms (zoning). This saves energy by not heating or cooling empty rooms.

The upfront cost can be higher than a traditional window AC or baseboard heater, but it is often less than installing a new central HVAC system with ductwork ($10,000-$20,000). Single-zone mini-splits cost $3,500-$5,000 installed. Multi-zone systems cost $5,000-$12,000 depending on the number of indoor units. The long-term energy savings from high efficiency (20+ SEER, 10+ HSPF) often provide a strong return on investment within 3-7 years.

Absolutely. Many of London's beautiful century homes in Old North, Wortley Village, and Woodfield were built with boilers and radiators, lacking ductwork for central AC. Installing central air in these homes would require costly and invasive ductwork installation ($10,000-$20,000). A ductless mini-split system provides efficient air conditioning and supplemental heating without tearing open walls. It's the perfect solution for heritage homes.

Ductless mini-splits can save 20-40% on heating and cooling costs compared to central systems. By eliminating energy loss from leaky ductwork (which can account for up to 30% of energy consumption), ductless systems are incredibly efficient. Many models achieve 20+ SEER cooling efficiency (vs 13-16 SEER for central AC) and 10+ HSPF heating efficiency. Zoning capability also saves energy by not heating or cooling unused rooms.

Yes, this is one of the most common reasons homeowners install mini-splits. If one room, like a south-facing bedroom, a room above the garage, a converted attic, or a sunroom, is always too hot or cold, a single-zone ductless unit can solve the problem without affecting the rest of the house. The unit has its own thermostat and operates independently of your central system.

Absolutely. A ductless mini-split is an excellent garage heating solution in London, providing both heating and cooling to make the space usable year-round. Unlike space heaters, mini-splits are energy-efficient and don't take up floor space (wall-mounted). They work efficiently down to -25°C, keeping your garage warm for winter projects or comfortable for a home gym. Many homeowners also use them for workshops, sheds, and home offices.

Ductless mini-split installation is much faster than central HVAC. A single-zone system typically takes 4-8 hours to install. A multi-zone system with 3-4 indoor units takes 1-2 days. The process involves mounting the indoor unit(s), placing the outdoor condenser, drilling a small 3-inch hole for the conduit, connecting refrigerant lines, and electrical work. Much less invasive than ductwork installation.

Yes. Ductless systems have multi-stage filtration that can drastically reduce dust, pollen, bacteria, and other allergens. Since there are no ducts to clean (which can harbor dust, mold, and pests), you breathe healthier air. Many models include washable filters, dehumidification modes, and even plasma or UV purification options. This makes mini-splits an excellent choice for allergy sufferers or households with respiratory concerns.

Ductless mini-splits require minimal maintenance. Homeowners should clean the washable filters monthly during peak usage seasons. Professional maintenance annually ($149/year) includes cleaning the indoor unit, checking refrigerant levels, inspecting electrical connections, cleaning the outdoor condenser, and verifying proper operation. With proper maintenance, mini-splits last 15-20 years. Without maintenance, efficiency drops and lifespan shortens.

Custom Comfort for Your Home

Ready to explore a ductless HVAC solution? Contact Hawana HVAC for a free consultation and quote in London, St. Thomas, and the surrounding communities. We'll help you determine if mini-splits are right for your home.

📞 (647) 550-4220

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