bidding on several apt complex chimney and dryer vent cleaning on one. Building at modest 3 story unit with dryer vents at most 20 ft up. They currently have bird guards on them and the 4 flap type. distance from outside to dryer connection inside is appx 20 ft. the vent has rigid elbow in wall then goes to white vinyl flex crap used in the 80's to outside vent. was putting proposal together trying to cover all the bases. here is what i have come up with to this point. <<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> With regards to the dryer vents, (approx. 396) our cleaning tools will be used from the outside of the units cleaning to the flexible hose behind the dryer. No lint will be blown into the unit in most cases. In addition, existing bird guards attached to the outside of each dryer vent will need to be removed and then put back on. Our pricing is as follows: o $xx.00 per unit to clean vent including removing and re-install bird guards. Minimum of 100 units per service request. o This service will be to CLEAN DRYER VENTS only and does not cover the dryer itself if attached. Any issues including: extreme blockages, birds nests, broken, split, missing or other damages are NOT covered under this proposal. Any needed repairs can be quoted and addressed separately. o We will provide minimal cleanup of lint from work area but due to nature of the material it blows around quite easily. o The vent system was installed using white vinyl flex material that is NOT considered an approved material for dryer venting by the manufactures or current building codes. Subsequently, we DO NOT warrant that cleaning the vents will prevent a dryer or dryer vent related fire and assume no liability herewithin. The method used is industry standard for large-scale projects of this nature and will not cause damage to existing dryer venting systems. We are NOT providing inspections of dryer vents prior to cleaning. This service is for CLEANING only. <<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>> anyone using a good quote contract i might have a look at to make sure I am covering my butt on this best as possible. also pricing advise welcome. Will be using air skippers set up with compressor from outside only. We currently clean residential DV with battery drill rotary brush system from outside as well. Usually metal piping and some vinyl if under house and accessible. also advise on equipment.. seeing other post at compressor min 175 psi. looking at 175 gas powered unit with 8 gal tank putting out 15 CFM @ 175 psi using heat seal equipment SS-6, SK6 or the SK-3LP model.