Polar Bear Air Conditioning & Heating Inc. Blog: Posts Tagged ‘Heating’

A Question from DC: What’s the Difference Between a Furnace and a Boiler?

Wednesday, December 7th, 2011

When it comes time to choose a new heating system for your DC home, there is a good chance your choices are limited. Most homes already have either forced air or radiant heat equipment installed so choosing something different would be costly and unnecessary. But, if you have a choice or are moving into a new home, here are some things to consider regarding the difference between furnaces and boilers.

What a Furnace Does

A furnace uses a fuel like gas, oil or electricity to heat a series of coils in the device. The furnace then uses a blower to push air across the heated coil and into an air handler where it can be distributed throughout your home. This is called a forced air system and requires a combination of ducts and filters to keep air moving smoothly and cleanly throughout your home.

If you have access to gas, a gas furnace with an AFUE of 90% or higher is one of the most efficient and cost effective ways to heat your home. These furnaces can also last upwards of 20-25 years with proper maintenance.

What a Boiler Does

A boiler is different in that it uses water as the heat carrying medium, not air. Boilers still need gas, oil or electricity to heat up the water in the system, though they often use less of it than a traditional furnace – depending on the age of the furnace and the boiler. After water is heated in the boiler, your radiant heating system carries the water to baseboard heaters or radiators throughout your home. This form of heat is preferred by many because it doesn’t require ductwork (which requires extra maintenance) or extra air filtering and it is more humidity friendly in a large home.

In terms of efficiency, both boilers and furnaces are efficient if you’re buying a new model. Capacity is also evenly matched. Boilers take the edge in comfort level and if you have the budget, you can install radiant floor heating which allows you to pipe hot water directly into bathroom floors or your living space so that you never again need to walk on cold floors. Another benefit of radiant heating is that the system will hold heat much longer and then release it over time instead of turning on and off a lot as a furnace tends to do.

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Old Equipment You Really Shouldn’t Keep in Washington DC

Wednesday, November 30th, 2011

When you move into an existing Washington DC home, there are many pieces of equipment that you may not want to keep. Some of them are just old and poor quality, while others cost you a lot of money and others still may be dangerous to you or your children. Before you settle into your space, make sure you have every one of your systems checked thoroughly for potential problems including inefficient heating, dangerous parts or environmentally unfriendly components.

Energy Cost

Number one on your list should be the cost of the energy needed to run your HVAC equipment. Furnaces and air conditioners in particular have become much more energy efficient in the last 10 years so older systems routinely cost much more money to operate than new ones. That doesn’t mean you should immediately rush out to replace your old furnace, but if it isn’t working properly or it’s costing you more money than you’d like, the cost benefit of a new system is often worth checking into.

Other things to check include your insulation, your air quality system, your ventilation system and anything used to heat or cool food in the kitchen – all of which may be less efficient than you might like.

Ozone Depleting Refrigerants

Older appliances like air conditioners may still use ozone depleting refrigerants that are no longer considered safe (or in some cases legal) for home use. If this is the case, not only does your system probably have a very low SEER rating, it likely isn’t good for the environment or your own health. So, have your system replaced as soon as possible to avoid potentially negative side effects.

Dangerous Equipment

Finally, there are those pieces of equipment that are dangerous. If you find that your furnace has rust around the edges, your gas lines are kinked, or you have a dangerously out of date heat pump in your backyard, it may be time for some replacements. In general, these systems will last for years longer than they are considered safe and while you probably cannot buy a house without a working and safe furnace and air conditioner, you should still have them inspected carefully and replaced as soon as possible if you suspect problems.

Good HVAC equipment is hard to come by – if your home has it already, you’re in luck, but if you happen to move into a place with poor quality materials and equipment, have it replaced as soon as possible. Your health and wallet will both benefit greatly.

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How to Get Your DC House Ready for Fall

Wednesday, October 19th, 2011

Now that you have put the lawnmower away for the year and pulled the leaf rakes and blowers out of your garage, you know it is also time to make plans to get your DC house ready for the colder temperatures, too. Getting ready for the fall means sealing up your home a little tighter (but not too tight) and making sure all of your heating equipment is in peak working order.

It’s a good idea to make a mental or physical checklist of everything that needs to be done – and why it needs to be done. Here are some basic tips on how to get your house ready for fall. Let’s first look at ways to assist your heating system to do its job and then look at ways to keep your heating system working efficiently.

First, check all areas of the home where there may be heat loss. Replacing screen windows and screened doors with glass windows and storm doors is the first logical step. Keep all of your screens together and store them in an area that’s convenient to access next spring. Check all of the caulking and weather stripping around windows, doors, roof vents, chimney stacks, etc. You may need to remove older caulk and weather stripping and replace it if it is chipped, cracked, or missing.

  • Make a visual inspection of the ductwork in your house. Ensure there are no openings between joints. Keep a roll of duct tape with you to seal off any obvious gaps, even after you have closed or repaired them. It never hurts to use a little duct tape.
  • Check all of your vents and returns for any obstructions or debris. Move furniture or carpeting away from the vents and returns.

Okay, you’ve done a good job of checking your house for leakage. Now let’s check your furnace for ways to keep it running efficiently. Besides providing warmth and comfort to people in your home, a properly tuned furnace will run more efficiently and use less energy – keeping your utility bills down.

Inspect your furnace filter. Since you will be turning your furnace on for the first time in a few months, you may want to replace the filter in the air handling unit which is connected to your furnace through a plenum. Chances are, the filter will need to be replaced and the timing would be right to do it while getting your house ready for fall. If you have a removable electronic filter, give a thorough washing with a soapy solution and rinse it out. Make sure it is dry before putting it back in the air handling unit.

  • Visually inspect the pilot flame in your furnace. The flame should be a bright blue with a slight shade of yellow on the tip. If it is not, there may be incomplete combustion inside your furnace, which should be checked immediately. Call a heating contractor to schedule an inspection.
  • Ensure there is easy access to your heating system by removing any clothes, boxes, furniture which may have accumulated around it.

The best way to get your heating system ready for the fall is to schedule routine service and maintenance visits from your local heating contractor.  Be safe, warm, and comfortable this fall by taking these easy steps.

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What Is Forced Air Heating? A Question from Washington DC

Wednesday, October 12th, 2011

Chances are that you’ve heard the term forced air heating in Washington before, particularly if you’re in the market for a new home heating system. But what does that actually mean? The truth is that if you’re asking this question, you’re not alone. There are so many types of home heating systems out there that it’s common to be a bit confused and overwhelmed by it all.

The truth is that a forced air heating system is simply a heating system that distributes heat throughout your house using air to carry it. In this type of system, heated air travels through a system of ducts and is expelled through vents into the different rooms and areas of your home in order to maintain a particular temperature. That temperature, of course, is whatever you set your thermostat to, and when the desired temperature is reached, the heat will shut off until the temperature drops down again.

The main difference between the different types of forced air heating systems is the type of equipment that heats the air. For instance, you could have a furnace or a heat pump. All of these are capable of heating air, and when paired with a fan, blower or air handler, can distribute heated air throughout your home.

Many forced air heating systems are remarkably energy efficient and can effectively keep you home comfortable all winter long. Additionally, they are generally made to be incorporated with central air conditioning systems for year round temperature control. Heat pumps are especially convenient in this way, as they’re able to both heat and cool your home depending on the season and your home comfort needs.

Particularly if you already have ductwork in place or if you’re choosing a heating system for a new construction home, it can make a lot of sense to opt for some type of forced air heating. However, if you’re looking to replace an existing heating system in a house that doesn’t already have ductwork in place, the need to put it in can add a lot to the overall installation costs of the system.

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