Saddleback Plumbing Heating & Air Blog: Archive for January, 2012

Plumbing FAQ 4: Why Won’t My Heat Pump Start?

Monday, January 30th, 2012

Plumbing experts in Irvine advise home owners that if you are having trouble with your heat pump, you may be surprised to learn that it is probably not the heat pump that is to blame, especially if the trouble is that it simply won’t start up. That seems counterintuitive, but it’s true: the heat pump can be in perfect working order but still not turn on.

The good news, then, is that your heat pump is fine and you won’t have to pay an arm and a leg to fix or replace it. Still though, these types of problems can very frustrating to diagnose and correct. Here are four common culprits when a heat pump won’t start:

  1. No power to the heat pump. Check your breaker box to see if the circuit breaker was tripped. If so, reset it and see if that fixes the problem. Another possibility is that your heat pump is wired to a wall switch, or that there is a switch on the unit itself. Make sure the switch is turned on.
  2. Make sure the thermostat is set to the proper mode, such as “heat” mode if you desire more heat. It seems overly simple, but sometimes the trouble is as simple as that.
  3. A recently replaced thermostat. If you recently upgraded or replaced the thermostat in your home, it’s possible that something went wrong that is preventing your heat pump from starting. It may be the wrong kind of thermostat – heat pumps require a specific type – or it may have been improperly wired.
  4. Finally, the heat pump may have its own circuit breaker on the air handler cabinet. This is often the case with heat pumps that have supplemental electric elements. If that breaker is tripped, that could cause the problems you are experiencing.

If you exhaust these problems and the problem persists or recurs – for example, if the circuit breaker trips again – call a contractor to work on your heat pump. There may be something larger at work that is causing problems in the electrical system that controls your heat pump, and that requires some expertise to properly address.

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Silverado Heat Pump Repair Guide: How to Handle Your Finicky Heat Pump

Friday, January 27th, 2012

A heat pump is designed to keep your Silverado home comfortable. Warm weather, cold weather – it doesn’t matter. It should turn on when you need it and turn off when you don’t. So, when the device starts turning on and off without reason or when you need it to stay on, what exactly is the problem and how can you fix that problem without losing the heating or cooling capacity of your device.

Common Causes of the Problem

There are a number of reasons why your heat pump would turn off shortly after turning on, and most of the time this occurs in heating mode. If it occurs in cooling mode, you should have the device inspected immediately because there is likely something wrong with a core component like the compressor. For heating mode issues, here are some common problems:

  • Dirty Coils – If the coils are dirty, the device won’t be able to properly operate, especially if it has been some time since the last cleaning. Both sets of coils need to be cleaned at least once a year to avoid this becoming a problem.
  • Low Refrigerant Charge – If the refrigerant gets low, you’ll need to have it recharged because the pressure in the device will drop and it will therefore turn off after a few minutes of use.
  • Defrost Timer – If the defrost timer is forcing the device into a defrost cycle too often (usually it is set to 30, 60, or 90 minutes), the fan might turn off every few minutes after turning on. This is a common problem and is usually due to a thermostat or switch issue which can be fixed relatively easily.

Another thing to ask yourself when this problem occurs is whether the device is heating properly when on. Defrost timer issues don’t usually impinge on the heating ability of the device, while low refrigerant can. You want to make sure the device is working properly when on and not just cycling on and off without heating capacity.

Based on what you find, you’ll need a technician to take a closer look and ensure everything is working properly. Most repairs for this type of problem are relatively simple.

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Common Questions about Heat Pumps

Wednesday, January 25th, 2012

Even if you installed a heat pump in your Trabuco Canyon home years ago, you may still have questions about the normal operation of your indoor and outdoor units. Here are answers to a few of the more common questions about heat pumps.

Do I need to schedule a heat pump maintenance visit before each season, or just once a year?

Scheduling a yearly maintenance visit is necessary to the proper upkeep and safe operation of your heat pump. This also extends the life of the system and helps it run more efficiently. However, scheduling a visit before the heating and cooling seasons isn’t necessary, unless you’ve had any concerns or issues with your heat pump.

Should I be concerned about the steam coming from my outdoor unit?

All heat pumps have a defrost cycle that melts the frost off of the outdoor coils in the winter. The steam rising from the outdoor unit results from the defrost cycle. If you notice that the defrost cycle lasts longer than ten to fifteen minutes, or if it cycles on and off frequently, you should call a service technician to look at your heat pump. There could be an issue with airflow that is affecting the compressor.

I just installed a heat pump. Why is my furnace running?

Many heat pump systems use the furnace fan blower to help distribute the heat throughout the house. Unless you’ve installed a geothermal heat pump, your furnace is most likely your backup heater, so it will kick on when the outside temperature drops below 20° F.

Is it really that important to clean my outdoor unit? It’s impossible to keep it clean all the time.

Yes, cleaning the outdoor unit is an especially important maintenance task. Not only does a routine cleaning of all the outdoor components maintain your heat pump’s efficiency and performance levels, it also prevents safety hazards. When you schedule a yearly maintenance visit with one of our technicians, cleaning the coils and outdoor unit is part of the service; however, if you want to clean the coils yourself, have one of our Trabuco Canyon technicians show you how to do this before you attempt it on your own. You could suffer from electric shock if you are not familiar with the proper cleaning procedure. You can also help by making sure that the debris is cleared from around the outdoor unit.

If you have any questions about the heat pump in your Trabuco Canyon home, or if you’d like to schedule a maintenance appointment, give Saddleback Plumbing a call any time.

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Signs of an Undersized Furnace

Monday, January 23rd, 2012

If you’re purchasing a new furnace for your Santa Ana home, you want to avoid buying one that is undersized for your particular space. To do that, here are some common signs that the furnace isn’t powerful enough for the heating needs of your home. These signs might appear for an older furnace as well, especially as it ages and loses its ability to provide adequate heat for your home.

Maintaining Temperature

The most common (and in many cases only) sign that your furnace is undersized is that the device simply doesn’t maintain the temperature in your home properly. This means that when turned on to full and left for a few hours, your furnace doesn’t heat your home to the thermostat setting.

This can be due to an improper load calculation or a load calculation that wasn’t taken at all. The perfectly sized furnace will heat your home evenly on the coldest day your area is likely to have. So, undersizing should be pretty evident – if it doesn’t heat your home evenly and it’s not exceptionally cold outside, you might not have enough BTUs under the hood.

How to Fix the Problem

The problem is one that varies depending on the severity of the undersizing. Modern furnaces are often available with two stages, meaning they can operate at both a low BTU rating (often around 40K or so) and a higher BTU rating (70K or higher). This is the perfect solution for homeowners worried about undersizing because it ensures that your home always has enough heat in reserve should the weather get exceptionally cold.

For example, most furnaces are sized for extremely low temperatures, but if the temperature jumps up to 50 degrees F outside, your furnace is now oversized for that weather. A two stage furnace offers solutions for both common conditions and extreme conditions and will resolve most of the concern you have about undersizing and not having enough heat to offset outdoor temperatures.

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Basic Furnace Safety Tips

Friday, January 20th, 2012

While you should schedule a yearly maintenance visit with a qualified HVAC technician to check for any safety concerns, you can also reduce potential safety hazards in the heating system of your Dana Point home. Whether you have a furnace or a heat pump, you can substantially decrease the chances of dangerous situations with a few minor routine tasks.

If you have any questions about how to better maintain your heating system, give us a call to speak with one of our expert HVAC technicians. Here are a few guidelines to get you started.

Ventilation in Forced-air Systems:

  • Regularly vacuum and clean out your heating vents and fan blower.
  • Check the condition of your chimney and vent pipe to make sure that none of the parts are damaged or show signs of deterioration.
  • Test the thermostat occasionally to make sure your heating system is working at optimal levels. There could be a safety concern if your heater is not properly heating your home.

Heat Exchangers:

  • Heat exchangers should be inspected often to prevent carbon monoxide leaks. Check for any obvious issues, such as rust or other damages.
  • The heat exchanger for furnaces should be inspected by a professional once a year in case there are hidden problems with the equipment, or if any of the components need to be replaced.
  • Check the pilot light in gas furnaces for any flickers or changes in color. Have someone turn up the thermostat while you watch the light, but turn off the system for five minutes first. If there are any changes, there could be a problem with the heat exchanger. Call a professional if you suspect issues with your heat exchanger.

Heating Equipment Inspections and Adjustments:

  • Adjust the temperature settings if you suspect that the heater isn’t working properly, and if it doesn’t work call a professional heating technician, or if you aren’t sure how to locate or adjust the controls.
  • Check the overall equipment for cracks, rust, or any other obvious signs of damage or deterioration that could create safety hazards.

In addition to performing these tasks, call a licensed Dana Point heating contractor to inspect your heating system at least once a year.

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Balboa Heating Installation Question: What Makes a Furnace High Efficiency?

Wednesday, January 18th, 2012

You’ve probably heard about the new lines of high efficiency furnaces being released by popular home heating companies in Balboa, but what exactly is different about these high efficiency devices from your current furnace? Let’s take a closer look at what a high efficiency furnace offers and why it can save you money.

Added Features

A high efficiency furnace uses familiar technology in a new way to reduce the amount of energy lost when combustion takes place. This means:

  • Sealed Combustion – Instead of open combustion which allows heat to escape during and after the combustion process, a high efficiency furnace uses a sealed chamber with carefully measured and fed airflow to burn fuel and produce heat. Exhaust heat can then be recaptured and used to heat air transferred to your air vents.
  • Two Stage Gas Valves – With a two stage gas valve, your furnace can respond to the temperature outside. There isn’t just one “on” switch. The furnace will regulate gas flow based on how much energy is needed to produce heat for your home. So, if there is a sudden burst of cold outside, the furnace will respond accordingly, but for most days when heating needs are low, it will use only the minimum amount of needed gas.
  • Programmable – High efficiency furnaces are now programmable, meaning you can set specific time limits for operation, change thermostat settings digitally and inspect the device through an electronic read out. The level of control given to you by a programmable high efficiency furnace can greatly reduce gas or electricity consumption.

Cost Benefit

The real reason many people are interested in high efficiency furnaces is that they are so much less expensive to operate. Instead of costing hundreds of dollars to run through the winter, they operate the bare minimum needed to heat your home. Using up to 95% of the fuel they consume to produce heat and regulating gas to cut how much is consumed during milder days, these furnaces are built to save you money.

If you have an old furnace in your Balboa home that chews through energy like nobody’s business, now might be the time to consider the benefits of a brand new, high efficiency model.

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Happy Martin Luther King Day

Monday, January 16th, 2012

Happy Martin Luther King Day! This holiday is not just about celebrating civil rights but also about serving your community. If you have the day off today, why not try spending it helping others? From volunteering at an animal shelter to helping the homeless, there are hundreds of ways you can make your community a better place to live. Have a great holiday!

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Woodbridge Heating Guide: Furnace Fan Limit Switch

Friday, January 13th, 2012

When researching your Woodbridge furnace and potential problems it might have, you’ve probably run across a few references to the fan limit switch. And while you know that it can break in a number of ways, do you know what the switch does and what you should look for when checking your furnace its air handler for problems?

What the Limit Switch Does

To put it very simply, the furnace fan limit switch is a control that tells your furnace’s fan when to turn on and off. So, when the furnace isn’t on, it tells the blower not to operate (and send cold air into your home) and when the furnace is on, it tells the blower to turn on and start circulating the warm air.

While the primary function of the limit switch is to turn the blower fan on and off, it also has a safety role. When the temperature in the air supply plenum gets too hot, the limit switch turns off the furnace boiler to keep there from being any damage from overheating. This is handy if there is a blockage in the air vents or the controls are messed up due to water damage or improper adjustments to the settings.

Looking for Problems

Most of the time, when there is an issue with your furnace turning off or on frequently, the limit switch is one of the first things you will check. Because the switch is electronic and is attached to a thermostat which measures temperature in the air supply plenum, a small problem can result in it not working properly. So, you can easily check it by temporarily bypassing the switch and seeing if your device turns on or off properly.

In many cases, if the limit switch is the problem, you will still need to call a Woodbridge professional for replacement, but you can avoid a lot of headaches related to tracking down the source of the problem. If you suspect a limit switch problem, make sure to call someone immediately, because it does provide an important safety function and because without it your furnace won’t cycle on and off properly.

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High Efficiency Northwood Furnaces: Chimney Concerns

Wednesday, January 11th, 2012

When upgrading to a high efficiency gas furnace in Northwood, you may need to make some upgrades to your chimney. Older chimneys built for standard furnaces with normal exhaust needs are not built to the specifications needed by today’s high efficiency models. Not only is it unsafe to leave it as is, but the cost of repairs if you don’t have it upgraded can be substantial.

Down-Sizing

A common concern when upgrading to a high efficiency gas furnace is the issue of condensation and draft. Because the amount of exhaust being vented is reduced by a high efficiency furnace, your current setup is not sufficient for the new model. So, it needs to be reduced in size by a professional to avoid backup of exhaust. Proper chimney sizing is a complex process that requires professional guidelines and careful measurements of all appliances in your home.

Because the chimney often isn’t used at all for a high efficiency furnace (often PVC pipe used instead), the extra airflow in the chimney can become a major issue.

Chimney Condensation

The biggest concern for the chimney when changing the furnace efficiency is condensation. Specifically, acidic condensation droplets can build up in the chimney if not properly stopped. A new chimney liner must be placed in the chimney to avoid excessive corrosion due to the acid droplets. Keep in mind that the efficiency of your new furnace will determine whether you will use the traditional chimney for exhaust or if a new line will be installed to vent your furnace.

When to Take Action

If you have your furnace replaced, your Northwood technician will likely discuss the chimney situation in your home with you. Keep in mind that this might be necessary and that there might be an added cost involved because of it. Modern furnaces are not designed to accommodate aging chimneys and your safety and the integrity of your house are at risk if you don’t retrofit the chimney if necessary.

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Furnace Tip 1: How to Fix a Faulty Furnace Blower

Monday, January 9th, 2012

The blower fan on your furnace is designed to distribute warm air through the ductwork in your Talega home evenly, ensuring you use all of the energy consumed by your furnace. If the blower doesn’t turn on when the furnace turns on or it continues to run when the furnace is off, it can cost you money and result in cold rooms. Here are some tips on how to fix a faulty furnace blower.

What is the Problem?

First, check to see what the problem is. If your furnace blower remains on all of the time, it may be a thermostat issue. Make sure the fan isn’t set to stay on continuously (a common setting for most air handlers). You should also check the limit control switch to make sure it is working properly. If this is broken, it needs to be replaced which is a relatively simple fix.

If the furnace blower isn’t turning on at all, you may have a belt problem. This can be fixed by you if you have the proper tools. To repair the belt problem, first turn off all electricity to the device. You’ll need to remove the old furnace blower belt, so release the tension in the pulleys before removing the belt.

Installing a new belt is not unlike doing so for your car. Make sure to check the blower or your user manual for proper tension when you install the new belt. Make sure you purchase the right size belt and set it to the right tension. If you cannot or you do not feel comfortable doing so, you should call a professional to inspect and repair the problem for you.

Getting the Blower Back Up and Running

Once your new belt is in place, test the system carefully, starting with the lowest setting (if there are variable settings). If it does not yet work or if something sounds strange, call a Talega heating and air conditioning technician right away. You don’t want the motor to burn out or something else more substantial to go wrong with your furnace or air handler during the middle of the winter.

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