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Market Assessment for Gas-fired Rooftop Units Eileen Eaton June Meeting 2007 Overview Market Background for Rooftop Units Major Manufacturers Typical Unit Characteristics Size Distribution Common Use Buildings Market Segmentation High-efficiency Units Product Offerings Product Cost

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market assessment for gas fired rooftop units

Market Assessment for Gas-fired Rooftop Units

Eileen Eaton

June Meeting 2007

overview
Overview
  • Market Background for Rooftop Units
    • Major Manufacturers
    • Typical Unit Characteristics
    • Size Distribution
    • Common Use Buildings
    • Market Segmentation
  • High-efficiency Units
    • Product Offerings
    • Product Cost
    • Market Barriers
    • Market Requirements
    • Energy Savings Opportunities
    • Energy Savings Potential
market background
Market Background
  • Packaged systems are used in two-thirds of all commercial floor space in the United States.
    • They are popular due to their low first cost and simple design.
  • Rooftop units account for 60% of cooling energy and nearly one-third of total heating and cooling energy in small and medium size, low-rise buildings.
major manufacturers
Major Manufacturers
  • The major manufacturers of unitary air-conditioners are:
typical unit characteristics
Typical Unit Characteristics
  • Common capacities of commercial packaged units range from 65,000 Btu/h - 240,000 Btu/h.
  • The market is dominated by small systems (<10 tons), representing almost 60% of the total installed DX cooling capacity.
  • The most popular unit size is 5 tons (in terms of units sold).
common use buildings
Common Use Buildings
  • Packaged rooftop units dominate the market for small and medium size, low-rise buildings.
  • Facilities that use commercial rooftop air conditioners include:
    • Small office buildings
    • Clinics and medical care facilities
    • Hotels
    • College dormitories
    • Military barracks
    • Retail stores
    • Schools and universities
    • Prisons
    • Warehouses
    • Laboratory and light industrial buildings
market segmentation
Market Segmentation
  • ≤ 5.5 tons – SEER
  • > 5.5 tons – EER
  • Off-the-shelf and semi-custom units
    • ≤ 20 tons
  • Custom built units
    • ≥ 20 tons
  • New construction
  • Renovation
high efficiency product offerings
High-efficiency Product Offerings
  • A few of the large manufacturers either have the equipment or can add a high-efficiency furnace on a custom basis.
  • A high-efficiency gas pack with a variable speed fan and efficiencies up to 96% is available for units ≤ 6 tons.
  • Models are available with an option of a modulating gas heater and depending on the manufacturer for 35-50 ton units or 20-130 ton units.
  • One manufacturer makes pulse combustion heaters on a custom basis.
high efficiency product costs
High-efficiency Product Costs
  • A 20-ton rooftop with a modulating furnace costs $8,000-9,000 more than a 2-stage gas heating furnace.
  • A 50-ton rooftop with a modulating furnace costs $9,000-10,000 more.
  • The units have additional features besides a modulation furnace, which tend to increase their cost.
market barriers for high efficiency units
Market Barriers for High-efficiency Units
  • Lack of Demand
  • First Cost
    • It is often difficult to sell higher priced energy efficient products in an environment where buyers select equipment based on first cost
  • Maintenance
    • An HVAC unit’s location on the roof can affect its operating efficiency, reliability and serviceability
    • Condensing units have problems with the condensate freezing in cold weather climates
  • Few manufacturers are making high-efficiency products
market requirements for high efficiency units
Market Requirements for High-efficiency Units
  • High-efficiency Products need to be:
    • Competitive on a first cost basis
    • Have low maintenance requirements
    • When maintenance is required, easy to service
  • Efficiency programs can play a significant role in reducing first cost of innovative products
energy savings opportunities
Energy Savings Opportunities
  • Smaller units (< 10 tons)
    • 60% of cooling capacity
    • Mass produced
  • Larger units (> 20 tons)
    • Generally less efficient
    • Custom built
    • Fewer target customers
  • High-use buildings – medium energy usage (85 to 115 kBtu/sqft/year) and represent a large amount of floorspace.
    • Offices
    • Mercantile & Service
    • Public Buildings
  • New Construction
energy savings potential
Energy Savings Potential
  • High-efficiency units can yield up to 16% energy savings for a 10-ton unit
  • Available Technologies:
    • Gas Modulating
      • Savings in fan power and gas

for heating

      • Cost premium
    • Condensing
      • Recovers waste heat from the

exhaust gases

      • Pulse Combustion - low standby

losses and combustion air fan energy consumption is virtually eliminated

questions
Questions?

Eileen Eaton

617-589-3949 x 203

[email protected]

Kara Rodgers

617-589-3949 x 202

[email protected]

Michelle Rosier

617-589-3949 x 232

[email protected]

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