Jake Kring. 11-08-24. I arrived for a blue club membership fall tune up. I spoke with the homeowner and found that she had a filter for me to replace but I used the filter I provided with her club membership. I first replaced the filter and set up my manometer and combustion analyzer. I found the gas pressure to be running at 3.7 IWC and the manufacturer range it to operate between 3.2 and 3.8 IWC. I set the gas pressure at 3.5 IWC and let the system settle while I checked the blower motor amps and induced motor amps. I found all readings to be within normal range. I set the thermostat back to the homeowners thermostat settings and checked the ambient CO reading and found no signs of a carbon monoxide leak at this time.