Why Opt for Ductless Air Conditioning in Oil-Heated Homes Without Ducts?

questions depicting what is the best air conditioning for old houses

In many homes heated by oil, the reliance on hydronic heating systems means there’s an absence of traditional HVAC ductwork. This setup often leads to homeowners resorting to window air conditioning units as a cooling solution, especially during the warmer months. While this approach was once considered practical, the emergence of ductless air conditioning technology offers a compelling new option. For homeowners contemplating an upgrade, the transition from window units to a ductless air conditioning system presents an advantageous choice.

This article delves into the drawbacks of window air conditioning units, highlighting why ductless systems are a much better choice for air conditioning for old houses.

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Why Window Air Conditioners Are Poor Cooling Solutions

We will explore the various disadvantages associated with the use of window AC units as an option for air conditioning for old houses.

Window Air Conditioners are Bulky

window AC unit

Unlike central air systems with distinct indoor and outdoor components working in tandem, window air conditioners combine these into one sizable unit. This design inherently makes them bulky. Despite years of engineering advancements, significant reductions in their size have not been achieved. They noticeably jut out from the exterior of homes, often disrupting the property’s aesthetic appeal. This is more than just an eyesore; it could potentially lower the property’s value by diminishing its curb appeal.

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Window Air Conditioners are Costly 

When evaluating air conditioners, looking beyond their initial purchase price is crucial. The operating costs, driven by energy consumption, significantly affect the overall expense. In this regard, window air conditioners are notably less economical. Compared to other cooling options, their inefficiency leads to higher energy usage relative to their size. 

Window Air Conditioners are Noisy

homeowner covering ears due to loud hvac unit

The compact design of window air conditioners, where all components are housed in one unit, results in noticeable operational noise. This becomes particularly bothersome if the unit is installed in a bedroom. The constant sounds of clicking and banging during each cycle can disrupt sleep, turning the cool environment into a restless one. Moreover, the noise level often increases with age. If you find the disturbance unbearable, it may be time to consider a quieter, more effective cooling solution.

Window Air Conditioning Units Have Limited Cooling Efficiency

The size of window air conditioning units belies their actual cooling effectiveness. Even the largest models available struggle to cool large rooms adequately. Their capability is generally confined to smaller or medium-sized spaces. For larger areas, the only solution is to install multiple window units, which can be impractical and aesthetically unappealing. 

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Window Cooling Systems are Detrimental to Indoor Air Quality

Window air conditioners often lead to compromised indoor air quality. The gaps that typically form around these units enable unfiltered external air to infiltrate indoor spaces. This air can carry a range of pollutants, potentially exacerbating allergies and respiratory conditions. Additionally, poorly designed window units may not effectively filter the air passing through them, leaving allergens largely untouched. Moreover, the environment within these air conditioners is often ideal for the growth of mold and bacteria, which further degrades the quality of air inside your home.

Advantages of Ductless Air Conditioning Systems

win win depicting benefits of ductless air conditioner

Having explored the limitations of window air conditioning units, a common go-to for air conditioning for old houses, we now turn our attention to one of the most effective alternatives and the reasons for considering it. When considering air conditioning for old houses, this is certainly the best option.

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Energy Efficiency of Ductless Air Conditioners

Ductless air conditioners stand out for their superior energy efficiency. When comparing their energy efficiency ratings with window units, it’s evident that ductless systems are more effective at converting electricity into cooling power. While the upfront cost may be higher, the reduced monthly energy expenses lead to significant savings over time.

Ductless Air Conditioners are Compact and Unobtrusive

Ductless air conditioners, composed of an indoor air handler and an outdoor unit, are notable for their space-saving design. The indoor unit’s sleek, narrow build allows for flexible placement in any room without consuming window space or obstructing natural light. Its ability to be mounted high on a wall ensures it harmonizes with existing interior layouts without disruption.

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Ductless Cooling Systems have Whisper-Quiet Operation

The design of ductless cooling systems places the majority of their noise-producing components in the outdoor unit, significantly reducing indoor noise levels. The exterior wall acts as an insulator, muting most operational sounds. Inside, only the faint hum of the air handler is perceptible, which is typically so subtle that it won’t disturb your sleep or distract you during daily activities.

Ductless Air Conditioning Units Offers Personalized Temperature Control

Ductless air conditioning systems offer the distinct advantage of zoning capabilities. This allows different areas of the house to be set to varying temperatures, catering to the individual comfort preferences of each family member. Instead of a uniform temperature throughout the home, occupants can adjust the thermostat in their respective zones to their liking or even turn off the air conditioner in unoccupied areas.

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Ductless Air Conditioners Enhance Indoor Air Quality

Ductless air conditioners eliminate the need for ducts, often collecting dust and pollutants. Their advanced filtration systems effectively block allergens and contaminants, creating a cleaner and healthier indoor environment.

Why Ductless Air Conditioners are More Affordable than Forced Air AC Systems 

save jar depicting saving money with a ductless cooling system

Homes with hydronic heating systems often lack built-in HVAC ductwork, making the addition of a forced-air cooling system a complex and invasive project. This installation typically involves extensive alterations like tearing down walls and ceilings for duct passage, resulting in a costly and labor-intensive process. This is problematic when it concerns air conditioning for old houses. Conversely, ductless air conditioners offer a simpler installation. They require only minimal connections between indoor and outdoor units, making the process quicker, more affordable, and less disruptive to your home’s structure.


Window air conditioners, with their various limitations, represent an outdated approach to home cooling. As more advanced alternatives become available, it’s advisable for homeowners to upgrade their cooling systems. Ductless air conditioners stand out, offering enhanced energy efficiency, superior indoor air quality, and improved overall comfort. Moreover, they are cost-effective and easy to install. Consulting with an HVAC professional is highly recommended for a seamless transition to a suitable ductless AC system.

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Contact Hart Home Comfort For Your HVAC Services

Hart Home Comfort offers expert heating and cooling services in Nassau County, Suffolk County, and Queens, New York. Our team of professionally certified technicians is skilled in HVAC tune-ups, repairs, installations, replacements, and more, ensuring top-quality service for your system.

We provide competitive pricing for our services, aiming to enhance your comfort and increase energy efficiency while reducing heating and cooling costs. Whether you need repair or a system replacement, we can recommend the best solutions within your budget. Our work comes with a satisfaction guarantee. For a free in-home estimate or to schedule an appointment, call Hart Home Comfort today.

For any questions about what Hart Home Comfort can do for you, give us a call today. Click here to contact us now or call us at (631) 667-3200 to find out more! Click the link to view our service area.

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