It says that while small-business groups support improving the health care system as well as lowering costs, bills proposed so far do little to contain costs or expand coverage.

The Air Conditioning Contractors of America has signed a letter opposing the health care insurance bills now working through Congress.

The letter, which was drafted by the U.S. Chamber of Commerce, has been co-signed by more than 3,100 state and local associations, and small-business organizations. It says that while small-business groups such as the ACCA support improving the health care system as well as lowering costs, the bills proposed so far do little to contain costs or expand coverage. The U.S. chamber says businesses especially oppose the employer mandates and government-run insurance plans contained in some of the bills.

“It is critically important for ACCA to continue to voice its opinions about health care reform on behalf of its members,” said ACCA President and CEO Paul Stalknecht. “We threw our weight behind this U.S. Chamber of Commerce effort to ensure that legislators in Washington are hearing the concerns of small businesses across the nation. We encourage our members to continue to stay apprised and involved in the evolving health care debate, and especially to make time to communicate with their elected officials.”

A copy of the letter has been sent to all House and Senate members. The  full text can be read here .