RMI Mechanical

Question:	What are the alternative types of cooling systems available and the pros and cons of each?
Answer:	System Type: Ductless Split System Air Conditioning Pros: Lower installation cost versus central air system With the compressor outside, its more quiet and efficient than a window unit More flexibility in unit placement within home interior No more wasted energy cooling unoccupied rooms Eliminates the need to install ducts Without ducts, avoids the energy loss of central air systems Cons: Requires professional installation vs. window unit that can be self-installed More expensive equipment cost than window unit Refrigeration and drain lines are visible on the exterior of the building May require more equipment than a central air system System Type: Ducted Central Air Conditioning Pros: High average efficiencies Equipment is out of sight within the building interior Better air distribution per room with added vents More quiet indoors Cons: Higher installation costs Requires professional installation of ductwork Cooling of unoccupied rooms wastes energy
Question:	How do I select the right cooling system?
Answer:	There are a number of factors you need to consider in choosing your cooling system. The primary issues you should take into account are: Make sure the system is properly sized for your needs. Your air conditioner contractor should provide you with a “cooling load calculation” for your home or business to assist you in this regard. A common rating term for air conditioners is the ton which equals 12,000 Btu per hour. The specific size of your cooling system will depend upon: the size of your building; its number of windows; its degree of shade; its level of insulation; and the amount of heat generated within it. As a rule of thumb, in Hawa ii 50 Btu per square foot of space is required. RMI can assist you in determining the exact size you need. Consider the specific comfort issues important to you. These can include a desire to reduce allergens due to persons with allergies, the need to control room-to-room temperature variation, etc. Establish your budget parameters Take into account the equipment’s cost, its installation expense, its warranty coverage, its life expectancy and the cost to operate it. In evaluating your options, review the alternative equipment’s Operating Cost efficiency & SEER Rating Ensure that the cooling system you ultimately select has specifications which are tailored to Hawaii’s climate rather than to that of the Mainland US.
CHOOSING YOUR AIR CONDITIONING CONTRACTOR
Question:	What are the key criteria I should keep in mind in selecting an air conditioning contractor?
Answer:	You should select your air conditioning contractor with as much care and scrutiny as you devote to choosing your equipment. Key considerations in making this very important selection include the following: Licensed and insured Prompt, courteous & fast reliable service Quality of workmanship and products as verified by references Factory trained technicians on staff Extensive industry knowledge and experience Provides a written estimate based on actual room measurements Presents a written contract specifying your cooling load calculation, cost & equipment warranty Offers customer benefits beyond price alone with particular emphasis on the quality of the installation