Part of responsible homeownership includes, of course, regular home maintenance.  And there are some tasks that, if deferred, can lead to a home system that’s inefficient and overworked, which can result in problems and expenses.  One such task is changing the filter of the home’s HVAC system.  It’s simple and inexpensive, and taking care of it at least every three months can mean the difference between optimum comfort and avoidable repairs. Most homes have some sort of furnace or heat pump, and many of those homes (especially newer ones) have combined heating, ventilation and air-conditioning or HVAC systems.  Each type uses some type of air filter or screen to prevent larger airborne particles (up to 40 microns) from entering the system and clogging sensitive machinery.  A system that has a dirty filter can suffer from pressure drop, which can lead to reduced air flow, or “blow-out,” resulting in no air infiltration at all.  Any of these conditions can cause the system to work harder to keep the home warm or cool (depending on the season and the setting). 

And any mechanical component that has to work harder to run efficiently puts undue stress on the whole system, which can lead to premature failure, resulting in repair or replacement. Also, a dirty filter that’s exposed to condensation can become damp, which can lead to mold growth that can be spread throughout the home by the HVAC system.  This can lead to serious health consequences, not to mention a compromised unit that will likely require servicing and may require replacement, depending on the severity of the moisture problem.how does air conditioner work in winter Most HVAC and furnace filters are disposable, made of biodegradable paper or similar media, and shaped in cells, screens or fins designed to trap as much airborne debris as possible.  where are carrier ac units madeFilters can typically be purchased in economical multi-packs, and there are many types that will fit different models of furnace/HVAC units.  ac window unit installation nyc

It’s important to use the appropriate filter for your unit; using the wrong filter that doesn’t fit the unit properly can create the same types of problems as having a dirty filter.  Your HVAC installer can show you where the filter goes and how to remove the old one and install a new one.  Your unit may also have an affixed label with directions for easy filter replacement. Your HVAC or furnace technician should service your unit once a year.  Because a furnace/HVAC unit contains moving parts, it’s important that belts are not cracked and dry, ventilation ductwork is not gapped, cracked or rusted, and components, such as coils and fans, are clog-free and adequately lubricated for unimpeded operation.  This sort of evaluation is best left to the professional, unless the homeowner has had the appropriate training. The filter of the unit, especially if it’s an HVAC unit that will tend to get nearly year-round use, should be changed by the homeowner at least every three months, but possibly more often.

Check your filter’s condition and change it once a month if: Change the filter immediately if: Tips on Changing the Filter Call a technician for servicing if: International Association of Certified Air Consultants More inspection articles like thisYou like to have a new HVAC installed? Congressional Heating and Air Conditioning could provide you with different proposals from what you need. Congressional HVAC is flexible in work hours to accomodate your HVAC needs. We listen to your concerns and provide you with different hvac options to choose from. We provide hvac installation for residential, commercial or industrial use. Congressional Heating and Air Conditioning ensures quality of work and dependable personalized service. Gaithersburg is part of our service area, contact us for your hvac insatallation. Do you feel something is not right with your hvac systems? Your air conditioning, cooling heating units or the HVAC System might need repairs to keep your HVAC system working.

Allow Congressional HVAC to look into your HVAC problem and we will provide you with different solutions to select from and give you full details of the hvac repair. We always listen to your heating and cooling concern providing you hvac repair proposals suitable to your needs. Contact us and have Congressional Heating and Air Conditioning look into your system. Gaithersburg is one of our service areas. HVAC Repairs could be hassle in most times as you may not know when a problem could occur and could be costly at times. Luckily these kind of situations could be avoided with HVAC Maintenance. It is always a good idea to have Congressional HVAC to look into your hvac system and do preventive hvac maintenance. These could save you money, the hassle and avoid any uncertainties with your HVAC system. Congressional Heating and Air Conditioning offers flexible work hours to accomodate your needs and have your hvac system. We have been in service with all types of heating, cooling and air conditioning systems for residential, commercial and industrial usage.

Gaithersburg is part of Congressional Heating and Air Conditioning service area. Contact us for more information about HVAC Maintenance. If your HVAC systems often needs repairs and highly consumes utility bills it may be time to consider hvac replacements. Congressional HVAC specializes in existing HVAC systems and hvac replacements. Congressional HVAC will hear out your concerns and provide hvac replacement proposals to meet your needs. We will assure that your new hvac system to operate efficiently. We replace different types of HVAC sytems, residential, commercial or industrial types. Gaithersburg is part of our service area, contact us for your hvac replacement and know the options fitted for your needs.There are several types of pumps used in fluid transfer, but the most common used in today's HVAC systems is the centrifugal pump. Types of centrifugal pumps include volute or axial flow pumps. The volute takes water from the impeller and discharges the water perpendicular to the shaft.

A centrifugal pump with a diffuser casing (axial flow pump) discharges the water parallel to the pump shaft. Centrifugal pumps are available in many types including circulator, single- and multi-stage end-suction, single- and multi-stage split-case, and vertical in-line pumps. Circulating pumps are typically used in low pressure, low-capacity systems. The size of this system is typically under 150 gpm and not rated for more than 125 psig operating pressure. This type of pump is typically mounted directly in and supported by the piping system and is available with the motor in either the vertical or horizontal position. See Figure 1 for a standard circulating pump. End-suction pumps are single-suction and can either be close- or flexible-coupled. A close-coupled pump has the impeller directly mounted to the motor shaft. A flexible-coupled end-suction pump has the impeller and the motor shaft separated by a flexible coupling. The benefit of using a close-coupled pump is that alignment of the motor shaft to the impeller is fixed.

A flexible-coupled pump can become misaligned during maintenance. This can create issues if not properly reassembled by trained personnel. End-suction pumps are designed such that the incoming water enters the pump through the end in a horizontal manner. The water then changes direction and is discharged vertically, perpendicular to the suction. These pumps are typically installed on a solid base on the floor. An end-suction pump is capable of being used in HVAC systems with capacities up to 4000 gpm and 150 ft of head. The advantage to using a close-coupled pump is that it requires less floor space within a plant room for installation. One of the disadvantages of using a close-coupled pump in an HVAC system is the motor type. The motor is typically specially matched to the type of shaft and the seals for the pump. Flexible coupled pumps typically use standard motors. See Figure 2 for a typical flexible coupled end-suction pump. Split-case pumps are similar to end-suction pumps in that they are flexible coupled between the motor and the pump.

The assembly, including the motor and pump, is rigidly mounted to a common base-plate. Pump suction and discharge are arranged in the horizontal direction and are perpendicular to the shaft. Split-case pumps are available either in single- or double-suction. To be a single-suction pump, the water enters the impeller from only one side. For double-suction, the fluid enters the impeller from both sides. Using double-suction reduces the risk of hydraulic imbalance. The reduction of hydraulic imbalance is one of the reasons why double-suction split-case pumps are preferred over single-suction. Split-case also may have multiple impellers for multi-stage operation. Multiple impellers provide increased available head within a single pump. Split-case pumps are available as horizontal or vertical split-case. For horizontal split-case pumps, the impeller casing is split in the horizontal plane. For vertical split-case pumps, the impeller casing is split in the vertical plane. To have the casing split allows full access to the impeller for maintenance.

Split-case pumps are used mostly in fire protection systems but also have been used in the HVAC industry for large capacity systems. Their capacity range is up to 6500 gpm and 600 ft of head. These pumps are also available with increased operating pressures up to 400 psig. See Figure 3 for a typical horizontal split-case pump. These pumps typically have a reduced footprint within a plant space and do not require inertia bases. Inertia bases are generally installed to reduce vibration from the rotating parts within the pump. discharge piping are arranged in the horizontal plane. Vertical in-line pumps are available as single- or double-suction.Vertical in-line pumps are close-coupled. The pump and motor are directly mounted on the pump casing. The pump is typically mounted and supported by the piping system in which it is installed. For larger capacity vertical in-line pumps, the pump assembly may be provided with a base for floor mounting. The pump suction and Vertical in-line pumps have a capacity of up to 25,000 gpm and 300 ft of head.